build(deps): bump actions/checkout in the github-actions group

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


Updates `actions/checkout` from 5.0.1 to 6.0.1
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](https://github.com/actions/checkout/compare/v5.0.1...v6.0.1)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
             packages: googletest libgmock-dev libgtest-dev
             version: 1.0
 
-        - uses: actions/checkout@v6
+        - uses: actions/checkout@v6.0.1
 
         - name: Configure
           run: |
@@ -108,7 +108,7 @@ jobs:
           os: [ubuntu-latest, windows-latest, macos-latest]
       runs-on: ${{ matrix.os }}
       steps:
-        - uses: actions/checkout@v6
+        - uses: actions/checkout@v6.0.1
 
         - name: Build
           run: |
@@ -126,7 +126,7 @@ jobs:
           os: [ubuntu-latest, windows-latest, macos-latest]
       runs-on: ${{ matrix.os }}
       steps:
-        - uses: actions/checkout@v6
+        - uses: actions/checkout@v6.0.1
 
         - name: Build
           shell: bash