chore(deps): bump actions/cache from 5 to 6

Bumps [actions/cache](https://github.com/actions/cache) from 5 to 6.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -31,12 +31,12 @@ jobs:
         echo "go-build=$(go env GOCACHE)" >> "$GITHUB_OUTPUT"
         echo "go-mod=$(go env GOMODCACHE)" >> "$GITHUB_OUTPUT"
     - name: Go Build Cache
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ${{ steps.go-cache-paths.outputs.go-build }}
         key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.sum') }}
     - name: Go Mod Cache
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: ${{ steps.go-cache-paths.outputs.go-mod }}
         key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}