Bump docker/metadata-action

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7 to c3b064c6d7c32446d6bc214ea075f1caad2de35a.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](docker/metadata-action@9ec57ed...c3b064c)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-version: c3b064c6d7c32446d6bc214ea075f1caad2de35a
  dependency-type: direct:production
...

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Author: dependabot[bot]

.github/workflows/dockerpublish.yml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        uses: docker/metadata-action@c3b064c6d7c32446d6bc214ea075f1caad2de35a
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |