chore(deps): update docker/metadata-action digest to 906ecf0

Author: renovate[bot]

.github/workflows/ci.yml

@@ -82,7 +82,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@57396166ad8aefe6098280995947635806a0e6ea
+        uses: docker/metadata-action@906ecf0fc0a80f9110f79d9e6c04b1080f4a2621
         with:
           images: ghcr.io/${{ github.repository }}
           flavor: |