Manage versioning of Poetry tool dependency

The project Python package dependencies are managed by the "Poetry" tool.

Previously, the version of Poetry was not managed in any way.

The GitHub Actions workflows used whichever version of Poetry happened to be installed on the runner machine. This meant
that the GitHub Actions workflows could break at any time through the Poetry installation on the runner machine being
updated to an incompatible version.

The contributors used whichever version of Poetry happened to be installed on their machine. This meant that they might
get different results from that produced by the environment of the GitHub Actions workflows.

The better solution is to take the same approach for managing the Poetry dependency as is done for the project's other
dependencies:

* Install a specific version of Poetry according to a single source of versioning data.
* Use the Dependabot service to get automated update pull requests.

The logical place to define the Poetry package dependency version is in pyproject.toml, as is done for all other Python
package dependencies.

Dependabot has support for two different forms of dependency data in the pyproject.toml file:

* Original Poetry data format, under the `tool.poetry` table
* PEP 621 format data, under the `project` table

Since Poetry can't be used to manage itself (it is instead installed using the "pipx" tool), the obvious approach would
be to define the Poetry dependency via the `project` table in the file. However, this is not possible because if a
`tool.poetry` table is present in pyproject.toml, Dependabot ignores the dependencies data from the `project` table. So
it is necessary to place the data for the Poetry dependency under the `tool.poetry` table of the file. A special
dependencies group is created for this purpose. That group is configured as "optional" so that it won't be installed
redundantly by `poetry install` commands.

Unfortunately pipx doesn't support using pyproject.toml as a dependency configuration file so it is necessary to get the
Poetry version constraint for use in the dependency argument of the `pipx install` command by parsing the project.toml
file.

Author: per1234

.github/workflows/check-mkdocs-task.yml

@@ -88,9 +88,6 @@ jobs:
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Setup Node.js
         uses: actions/setup-node@v5
         with:

.github/workflows/check-python-task.yml

@@ -11,6 +11,8 @@ on:
       - "**/poetry.lock"
       - "**/pyproject.toml"
       - "**/setup.cfg"
+      - "go.mod"
+      - "go.sum"
       - "Taskfile.ya?ml"
       - "**/tox.ini"
       - "**.py"
@@ -21,6 +23,8 @@ on:
       - "**/poetry.lock"
       - "**/pyproject.toml"
       - "**/setup.cfg"
+      - "go.mod"
+      - "go.sum"
       - "Taskfile.ya?ml"
       - "**/tox.ini"
       - "**.py"
@@ -66,14 +70,16 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v5
 
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
       - name: Install Python
         uses: actions/setup-python@v6
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with:
@@ -102,9 +108,6 @@ jobs:
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with:

.github/workflows/deploy-cobra-mkdocs-versioned-poetry.yml

@@ -72,16 +72,6 @@ jobs:
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install poetry
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v5
-        with:
-          node-version-file: package.json
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with:
@@ -92,7 +82,7 @@ jobs:
         run: task docs:generate
 
       - name: Install Python dependencies
-        run: poetry install --no-root
+        run: task poetry:install-deps
 
       - name: Determine versioning parameters
         id: determine-versioning

.github/workflows/spell-check-task.yml

@@ -53,9 +53,6 @@ jobs:
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with:

.github/workflows/test-go-integration-task.yml

@@ -84,9 +84,6 @@ jobs:
         with:
           python-version-file: pyproject.toml
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with:

.licenses/arduino-lint/go/github.com/fatih/color.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: github.com/fatih/color
-version: v1.15.0
+version: v1.18.0
 type: go
 summary: Package color is an ANSI color package to output colorized or SGR defined
   output to the standard output.

.licenses/arduino-lint/go/github.com/magiconair/properties.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: github.com/magiconair/properties
-version: v1.8.7
+version: v1.8.10
 type: go
 summary: Package properties provides functions for reading and writing ISO-8859-1
   and UTF-8 encoded .properties files and has support for recursive property expansion.

.licenses/arduino-lint/go/github.com/mattn/go-colorable.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: github.com/mattn/go-colorable
-version: v0.1.13
+version: v0.1.14
 type: go
 summary:
 homepage: https://pkg.go.dev/github.com/mattn/go-colorable

.licenses/arduino-lint/go/github.com/pelletier/go-toml/v2.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: github.com/pelletier/go-toml/v2
-version: v2.1.0
+version: v2.2.4
 type: go
 summary: Package toml is a library to read and write TOML documents.
 homepage: https://pkg.go.dev/github.com/pelletier/go-toml/v2

.licenses/arduino-lint/go/github.com/pelletier/go-toml/v2/internal/characters.dep.yml

@@ -1,12 +1,12 @@
 ---
 name: github.com/pelletier/go-toml/v2/internal/characters
-version: v2.1.0
+version: v2.2.4
 type: go
 summary:
 homepage: https://pkg.go.dev/github.com/pelletier/go-toml/v2/internal/characters
 license: mit
 licenses:
-- sources: v2@v2.1.0/LICENSE
+- sources: v2@v2.2.4/LICENSE
   text: |
     The MIT License (MIT)
 
@@ -30,6 +30,6 @@ licenses:
     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     SOFTWARE.
-- sources: v2@v2.1.0/README.md
+- sources: v2@v2.2.4/README.md
   text: The MIT License (MIT). Read [LICENSE](LICENSE).
 notices: []