Bump actions/checkout from 4.2.2 to 5.0.0 (#368)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.2 to 5.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@11bd719...08c6903)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 5.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/check-release.yml

@@ -23,7 +23,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Install Python
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:

.github/workflows/docs.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
     - name: Install Python ${{ env.python-version }}
       uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with:

.github/workflows/downstream.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@affc83be6020d529b9368cd4d63e467877606600 # v1

.github/workflows/js.yml

@@ -30,7 +30,7 @@ jobs:
           - group: services
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:

.github/workflows/playwright.yml

@@ -25,7 +25,7 @@ jobs:
         python-version: [ '3.9', '3.10', '3.11', '3.12', '3.13' ]
     steps:
     - name: Checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
     - name: Set up Python
       uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0

.github/workflows/pythonpackage.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Set up Python
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
@@ -32,7 +32,7 @@ jobs:
         python-version: [ '3.9', '3.10', '3.11', '3.12', '3.13' ]
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@affc83be6020d529b9368cd4d63e467877606600 # v1
       - name: Install pip dependencies
@@ -64,7 +64,7 @@ jobs:
 #    timeout-minutes: 20
 #    runs-on: ubuntu-latest
 #    steps:
-#      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+#      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 #      - name: Base Setup
 #        uses: jupyterlab/maintainer-tools/.github/actions/base-setup@affc83be6020d529b9368cd4d63e467877606600 # v1
 #        with:
@@ -80,7 +80,7 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@affc83be6020d529b9368cd4d63e467877606600 # v1
       - name: Install the Python dependencies
@@ -99,7 +99,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@affc83be6020d529b9368cd4d63e467877606600 # v1
       - name: Build SDist