Bump andstor/file-existence-action from 2 to 3 (#1686)

Bumps [andstor/file-existence-action](https://github.com/andstor/file-existence-action) from 2 to 3.
- [Release notes](https://github.com/andstor/file-existence-action/releases)
- [Commits](https://github.com/andstor/file-existence-action/compare/v2...v3)

---
updated-dependencies:
- dependency-name: andstor/file-existence-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/maven.yaml

@@ -63,7 +63,7 @@ jobs:
 
       - name: check test times cache exists
         id: check_files
-        uses: andstor/file-existence-action@v2
+        uses: andstor/file-existence-action@v3
         with:
           files: /tmp/sorted.txt