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/release.yml

@@ -128,7 +128,7 @@ jobs:
           username: ${{ secrets.registry_user != null && secrets.registry_user || secrets.ALT_REG_USER }}
           password: ${{ secrets.registry_password != null && secrets.registry_password || secrets.ALT_REG_PASSWORD }}
       - name: Build and push
-        uses: docker/build-push-action@v6.18.0
+        uses: docker/build-push-action@v7.0.0
         with:
           context: "."
           # This is not conditional on pull_request as we want access to these if we are manually running it.