build(deps): Bump docker/build-push-action from 2.7.0 to 2.8.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.7.0...v2.8.0)

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

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

.github/workflows/security-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
       - name: Build docker-salt-master image
         if: github.event_name != 'schedule'
-        uses: docker/build-push-action@v2.7.0
+        uses: docker/build-push-action@v2.8.0
         with:
           context: .
           file: ./Dockerfile