ci: Refactor timelord action to use git-warp-time fallback

Updates the timelord action to fall back to git-warp-time when the cache
is completely empty, enabling timestamp restoration even on fresh builds.
Simplifies the interface by making inputs optional with sensible defaults
and adds Docker integration via buildkit-cache-dance.

.forgejo/workflows/renovate.yml

@@ -70,7 +70,7 @@ jobs:
             package-cache-
 
       - name: Self-hosted Renovate
-        uses: https://github.com/renovatebot/github-action@v43.0.11
+        uses: https://github.com/renovatebot/github-action@v43.0.9
         env:
           LOG_LEVEL: ${{ inputs.logLevel || 'info' }}
           RENOVATE_DRY_RUN: ${{ inputs.dryRun || 'false' }}