chore(deps): bump actions/cache from 6.0.0 to 6.1.0 in the actions group (#456)

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


Updates `actions/cache` from 6.0.0 to 6.1.0
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@2c8a9bd...55cc834)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

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/self-test.yml

@@ -45,7 +45,7 @@ jobs:
 
       - name: Cache the build artifacts
         id: cache-build
-        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: build
           key: ${{ runner.os }}-${{ hashFiles('docs/examples/demo/**') }}

action.yml

@@ -274,7 +274,7 @@ runs:
 
     - name: Enable cache
       if: inputs.cache-enable == 'true' || inputs.cache-enable == true
-      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
+      uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
       with:
         path: ${{ runner.temp }}/cpp-linter-action-cache
         key: cpp-linter-action_${{ runner.os }}_${{ steps.compute-cache-key.outputs.key }}