build(deps): bump actions/checkout from 5 to 6

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] <[email protected]>

Author: dependabot[bot]

.github/workflows/go.yml

@@ -10,11 +10,11 @@ jobs:
     container: ghcr.io/carapace-sh/go:1.23.1
     steps:
     - name: shallow clone
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       if: "!startsWith(github.ref, 'refs/tags/')"
 
     - name: deep clone
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       if: startsWith(github.ref, 'refs/tags/')
       with:
         fetch-depth: 0