Merge pull request #20173 from mozilla/dependabot/github_actions/docker/metadata-action-6.0.0

chore(deps): bump docker/metadata-action from 5.10.0 to 6.0.0

Author: vbudhram

.github/workflows/docker.yml

@@ -112,7 +112,7 @@ jobs:
       - uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - id: meta
-        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
+        uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6.0.0
         with:
           images: |
             ${{ env.GAR_LOCATION }}-docker.pkg.dev/${{ env.GCP_PROJECT_ID }}/${{ env.GAR_REPOSITORY}}/${{ env.IMAGE}}