Bump actions/actions-runner in /images/meat-runner-22.04

Bumps [actions/actions-runner](https://github.com/actions/runner) from 2.317.0 to 2.318.0.
- [Release notes](https://github.com/actions/runner/releases)
- [Changelog](https://github.com/actions/runner/blob/main/releaseNote.md)
- [Commits](actions/runner@v2.317.0...v2.318.0)

---
updated-dependencies:
- dependency-name: actions/actions-runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

images/meat-runner-22.04/dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/actions/actions-runner:2.317.0
+FROM ghcr.io/actions/actions-runner:2.318.0
 LABEL org.opencontainers.image.source=https://github.com/synapsestudios/meat-runner
 
 SHELL ["/bin/bash", "--login", "-c"]