github-actions(deps): bump actions/cache from 6.0.0 to 6.1.0

Bumps [actions/cache](https://github.com/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@v6.0.0...v6.1.0)

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

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

Author: dependabot[bot]

.github/workflows/sub-split.yaml

@@ -30,7 +30,7 @@ jobs:
           user_email: "info@phpdoc.org"
       - name: "Cache splitsh-lite"
         id: "splitsh-cache"
-        uses: "actions/cache@v6.0.0"
+        uses: "actions/cache@v6.1.0"
         with:
           path: "./.splitsh"
           key: "${{ runner.os }}-splitsh-d-101"