GitHub Actions: Bump actions/checkout in the gh-dependencies group

Bumps the gh-dependencies group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `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
  dependency-group: gh-dependencies
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
         run: sysctl -w vm.mmap_rnd_bits=28
 
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with: { 'fetch-depth': 0 }
 
       - name: Install unzip (for tests) and zstd (for faster caching)
@@ -167,7 +167,7 @@ jobs:
         run: sysctl -w vm.mmap_rnd_bits=28
 
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with: { 'fetch-depth': 0 }
 
       - name: Install zstd (for faster caching)
@@ -219,7 +219,7 @@ jobs:
   #         --health-timeout 5s
   #         --health-retries 5
   #   steps:
-  #     - uses: actions/checkout@v5
+  #     - uses: actions/checkout@v6
   #     - name: Select Xcode 11.4
   #       run: sudo xcode-select -s /Applications/Xcode_11.4.app
   #     - name: Log Xcode version

.github/workflows/lint.yml

@@ -28,7 +28,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout code
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
             - name: Lint Front-End
               run: make lint-front-end
             - name: Build Front-End

.github/workflows/query-performance.yml

@@ -31,7 +31,7 @@ jobs:
       image: registry.gitlab.com/finestructure/spi-base:2.1.0
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with: { 'fetch-depth': 0 }
 
       - name: Install unzip (for tests) and zstd (for faster caching)

.github/workflows/snapshots.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Build Front-End