Bump redhat-actions/push-to-registry from 2 to 3

Bumps [redhat-actions/push-to-registry](https://github.com/redhat-actions/push-to-registry) from 2 to 3.
- [Release notes](https://github.com/redhat-actions/push-to-registry/releases)
- [Changelog](https://github.com/redhat-actions/push-to-registry/blob/main/CHANGELOG.md)
- [Commits](redhat-actions/push-to-registry@v2...v3)

---
updated-dependencies:
- dependency-name: redhat-actions/push-to-registry
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/update_robottelo_image.yml

@@ -38,7 +38,7 @@ jobs:
 
       - name: Push Robottelo image to quay.io
         id: push-to-quay
-        uses: redhat-actions/push-to-registry@v2
+        uses: redhat-actions/push-to-registry@v3
         with:
           image: robottelo
           tags: ${{ steps.image_tag.outputs.IMAGE_TAG }}