Bump docker/build-push-action from 6.18.0 to 7.0.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.18.0 to 7.0.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.18.0...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
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -53,7 +53,7 @@ jobs:
           driver-opts: network=host
 
       - name: Build & push the base image to local registry
-        uses: docker/build-push-action@v6.18.0
+        uses: docker/build-push-action@v7.0.0
         with:
           context: .
           push: true
@@ -74,7 +74,7 @@ jobs:
           echo "additional_tags=,ghcr.io/${{ github.repository }}/runtime:${{ matrix.version }}" >> $GITHUB_ENV
 
       - name: Build & push the ${{ matrix.version }}-${{ matrix.arch }} image
-        uses: docker/build-push-action@v6.18.0
+        uses: docker/build-push-action@v7.0.0
         with:
           context: .
           push: true