Bump docker/build-push-action from 2.5.0 to 2.6.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.5.0 to 2.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.5.0...v2.6.1)

---
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/update-base-image.yml

@@ -33,7 +33,7 @@ jobs:
       -
         name: Build and push to Docker Hub and Github Packages Docker Registry
         id: docker_build
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           push: true
           tags: |

.github/workflows/update-image-on-push.yml

@@ -34,7 +34,7 @@ jobs:
       -
         name: Build and push to Docker Hub and Github Packages Docker Registry
         id: docker_build
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           push: true
           tags: |