Bump leafo/gh-actions-luarocks from 4 to 5 (#353)

Bumps [leafo/gh-actions-luarocks](https://github.com/leafo/gh-actions-luarocks) from 4 to 5.
- [Release notes](https://github.com/leafo/gh-actions-luarocks/releases)
- [Commits](leafo/gh-actions-luarocks@v4...v5)

---
updated-dependencies:
- dependency-name: leafo/gh-actions-luarocks
  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>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -41,7 +41,7 @@ jobs:
           luaVersion: "5.1"
 
       - name: Install Luarocks
-        uses: leafo/gh-actions-luarocks@v4
+        uses: leafo/gh-actions-luarocks@v5
 
       - name: Run Unit Tests
         run: |