build(deps): bump docker/metadata-action from 4.5.0 to 4.6.0 (#6941)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Commits](https://github.com/docker/metadata-action/compare/v4.5.0...v4.6.0)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-docker-image.yml

@@ -86,7 +86,7 @@ jobs:
       # Automatic tag management and OCI Image Format Specification for labels
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v4.5.0
+        uses: docker/metadata-action@v4.6.0
         with:
           # list of Docker images to use as base name for tags
           images: |

.github/workflows/zcash-lightwalletd.yml

@@ -75,7 +75,7 @@ jobs:
       # Automatic tag management and OCI Image Format Specification for labels
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v4.5.0
+        uses: docker/metadata-action@v4.6.0
         with:
           # list of Docker images to use as base name for tags
           images: |