chore(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/basic.yml

@@ -24,7 +24,7 @@ jobs:
           - beta
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install ${{ matrix.rust }} toolchain
         run: |
@@ -65,7 +65,7 @@ jobs:
           - '--fuzz-dir=keyvalues-serde/fuzz loosely_typed'
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       # Pin to a specific nightly version since we only want it for being able
       # to use unstable features, not because we _need_ the newest version.

.github/workflows/coverage.yml

@@ -8,7 +8,7 @@ jobs:
     env:
       CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install stable toolchain
         uses: dtolnay/rust-toolchain@master
         with:

.github/workflows/release-parser.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Sanity check test run
         run: |
           cargo test --all-features --manifest-path keyvalues-parser/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Publish parser library
         run: |
           cargo publish --manifest-path keyvalues-parser/Cargo.toml --token ${{ secrets.CRATES_IO_TOKEN }}

.github/workflows/release-serde.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Sanity check test run
         run: |
           cargo test --all-features --manifest-path keyvalues-serde/Cargo.toml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Publish serde library
         run: |
           cargo publish --manifest-path keyvalues-serde/Cargo.toml --token ${{ secrets.CRATES_IO_TOKEN }}