Bump the github-actions-all group with 2 updates

Bumps the github-actions-all group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [actions/cache](https://github.com/actions/cache).


Updates `actions/checkout` from 4 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

Updates `actions/cache` from 4 to 5
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions-all
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions-all
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-linux.yml

@@ -35,15 +35,15 @@ jobs:
           coverage: ${{ matrix.coverage }}
 
       - name: Checkout Galette core
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: galette/galette
           path: galette-core
           fetch-depth: 1
           ref: develop
 
       - name: Checkout plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: galette-core/galette/plugins/plugin-auto
 
@@ -53,7 +53,7 @@ jobs:
           echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
@@ -174,7 +174,7 @@ jobs:
           php-version: ${{ matrix.php-version }}
 
       - name: Checkout plugin
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: galette-core/galette/plugins/plugin-auto