fix: simplify docker build-push step

Author: gurghet

.github/workflows/release.yaml

@@ -77,9 +77,7 @@ jobs:
         with:
           context: .
           push: true
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ needs.release.outputs.new_release_version }}
+          tags: ghcr.io/${{ github.repository }}:latest
           cache-from: type=gha
           cache-to: type=gha,mode=max