Bump docker/build-push-action from 6.19.2 to 7.0.0 (#4070)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.19.2 to 7.0.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.19.2...v7.0.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/docker-image.yaml

@@ -44,7 +44,7 @@ jobs:
 
       - name: Build and push Taskwarrior Docker image
         id: build-and-push
-        uses: docker/build-push-action@v6.19.2
+        uses: docker/build-push-action@v7.0.0
         with:
           context: .
           file: "./docker/task.dockerfile"