[release-2.0] fix(ci): Add latest image tag only for the master branch (#2862)

Signed-off-by: Andrey Velichkevich <andrey.velichkevich@gmail.com>
Co-authored-by: Andrey Velichkevich <andrey.velichkevich@gmail.com>

Author: google-oss-robot

.github/workflows/template-publish-image/action.yaml

@@ -82,7 +82,7 @@ runs:
         images: ${{ inputs.image }}
         tags: |
           type=ref,event=tag
-          type=raw,latest
+          type=raw,value=latest,enable={{is_default_branch}}
           type=sha
 
     - name: Build and Push