Bump ScribeMD/docker-cache from 0.3.7 to 0.4.0

Bumps [ScribeMD/docker-cache](https://github.com/scribemd/docker-cache) from 0.3.7 to 0.4.0.
- [Release notes](https://github.com/scribemd/docker-cache/releases)
- [Changelog](https://github.com/ScribeMD/docker-cache/blob/main/CHANGELOG.md)
- [Commits](ScribeMD/docker-cache@0.3.7...0.4.0)

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

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

.github/workflows/master.yml

@@ -27,7 +27,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Docker caching
-        uses: ScribeMD/docker-cache@0.3.7
+        uses: ScribeMD/docker-cache@0.4.0
         id: cache
         continue-on-error: true
         with: