Bump actions/checkout from 5 to 6 (#35)

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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -90,7 +90,7 @@ jobs:
       - name: Install nfpm
         run: sudo dpkg -i nfpm.deb
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           sparse-checkout: |
             nfpm.yaml
@@ -140,7 +140,7 @@ jobs:
       contents: write
       actions: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           sparse-checkout: |
             README.md

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
     outputs:
       php-version: ${{ steps.setup-php.outputs.php-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -65,7 +65,7 @@ jobs:
             spc-variant: macos-x86_64
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           sparse-checkout: craft.yml
           sparse-checkout-cone-mode: false
@@ -133,7 +133,7 @@ jobs:
     env:
       GOFLAGS: '-mod=mod'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-go@v6
         with: