build: only push when its not a PR

Signed-off-by: Jared Watts <jbw976@gmail.com>

Author: jbw976

.github/workflows/ci.yml

@@ -104,6 +104,6 @@ jobs:
           target: image
           build-args:
             GO_VERSION=${{ env.GO_VERSION }}
-          push: true
+          push: ${{ github.event_name != 'pull_request' }}
           tags: |
             ${{ env.IMAGE_NAME }}:${{ env.IMAGE_VERSION }}