Bump docker/build-push-action

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from f2a1d5e99d037542a71f64918e516c093c6f3fc4 to 4976231911ebf5f32aad765192d35f942aa48cb8.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@f2a1d5e...4976231)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
...

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

.github/workflows/build-test-push.yml

@@ -62,7 +62,7 @@ jobs:
             type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        uses: docker/build-push-action@4976231911ebf5f32aad765192d35f942aa48cb8
         with:
           # We need to specify the context explicitly so the action doesn't
           # grab the source straight from the git. That's not a problem in