chore(deps): update docker/metadata-action digest to c299e40 (#245)

Author: renovate[bot]

.github/workflows/docker.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@8d8c7c12f7b958582a5cb82ba16d5903cb27976a
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051
         with:
           images: clivern/lynx