Bump andstor/file-existence-action from 2 to 3

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](andstor/file-existence-action@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>

Author: dependabot[bot]

action.yml

@@ -89,7 +89,7 @@ runs:
       shell: bash
     - name: "Check file existence"
       id: check_files
-      uses: andstor/file-existence-action@v2
+      uses: andstor/file-existence-action@v3
       with:
         files: ".tmp"
     - name: "Post: Change folder own group"