Bump docker/build-push-action from 2 to 3 (#9)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2 to 3.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v2...v3)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

.github/workflows/code.yml

@@ -204,7 +204,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Build runtime image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           file: .devcontainer/Dockerfile
           context: .