[GRASS-git] [OSGeo/grass] 4f8f6b: CI(deps): Update docker/metadata-action action to v5

[renovate[bot]]

  Branch: refs/heads/renovate/docker-metadata-action-5.x
  Home:   https://github.com/OSGeo/grass
  Commit: 4f8f6ba495c332def3e241bb0c9bfb6cdd5a5695
      https://github.com/OSGeo/grass/commit/4f8f6ba495c332def3e241bb0c9bfb6cdd5a5695
  Author: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
  Date:   2023-09-12 (Tue, 12 Sep 2023)

  Changed paths:
    M .github/workflows/docker.yml

  Log Message:
  -----------
  CI(deps): Update docker/metadata-action action to v5