gateway: bump leafo/gh-actions-luarocks from 5.0.0 to 6.0.0

Bumps [leafo/gh-actions-luarocks](https://github.com/leafo/gh-actions-luarocks) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/leafo/gh-actions-luarocks/releases)
- [Commits](leafo/gh-actions-luarocks@4c082a5...97053c5)

---
updated-dependencies:
- dependency-name: leafo/gh-actions-luarocks
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/dummy.yml

@@ -168,7 +168,7 @@ jobs:
         if: false
       - uses: Kesin11/actions-timeline@e018cfefea60b4f44266998551211a35a58b8097  # v3.0.0
         if: false
-      - uses: leafo/gh-actions-luarocks@4c082a5fad45388feaeb0798dbd82dbd7dc65bca  # v5
+      - uses: leafo/gh-actions-luarocks@97053c556d6ce2c8e26eb7ac93743437c7af7248  # v6.0.0
         if: false
       - uses: lhotari/sandboxed-trivy-action@555963036b2012b44c1071508a236e569db28ebb  # v1.0.1
         if: false