Bump actions/checkout from 5 to 6 (#172)

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/check-lint.yml

@@ -12,7 +12,7 @@ jobs:
         run: |
           sudo apt update
           sudo apt install clang-format-15
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: ./scripts/check-lint.sh
         env:
           CLANG_FORMAT_PATH: "/usr/bin/clang-format-15"

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout current branch (full)
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Java
       uses: actions/setup-java@v5
       with:

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
   publish:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-java@v5