Bump docker/build-push-action from 2 to 4

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2 to 4.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/integration-test.yml

@@ -123,7 +123,7 @@ jobs:
         #-Export it for the future use in CD release pipeline
         #Documentation: https://github.com/docker/build-push-action
       - name: Build Cloudwatch Agent Image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         if: steps.cached_binaries.outputs.cache-hit != 'true'
         with:
           file: amazon-cloudwatch-container-insights/cloudwatch-agent-dockerfile/localdeb/Dockerfile