Bump docker/metadata-action (#713)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 60a0d343a0d8a18aedee9d34e62251f752153bdb to 906ecf0fc0a80f9110f79d9e6c04b1080f4a2621.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@60a0d34...906ecf0)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Amrit Krishnan <[email protected]>

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@60a0d343a0d8a18aedee9d34e62251f752153bdb
+        uses: docker/metadata-action@906ecf0fc0a80f9110f79d9e6c04b1080f4a2621
         with:
           images: vectorinstitute/cyclops