Update sync-fork.yml

Author: jo-chemla

.github/workflows/sync-fork.yml

@@ -58,6 +58,7 @@ jobs:
           # find latest tag by commit date
           LATEST_TAG=$(git describe --tags `git rev-list --tags --max-count=1`)
           echo "Latest upstream tag: $LATEST_TAG"
+          echo "LATEST_TAG=$LATEST_TAG" >> $GITHUB_ENV
           # check if tag exists in fork
           if ! git ls-remote --tags origin | grep -q "refs/tags/$LATEST_TAG"; then
             git push origin $LATEST_TAG
@@ -71,6 +72,5 @@ jobs:
         if: github.event_name == 'workflow_dispatch' || steps.push_tag.outputs.pushed == 'true' || !github.event_name
         with:
           tag: ${{ env.LATEST_TAG }}
-          generate_release_notes: true
-          draft: false
-          prerelease: false
+          generateReleaseNotes: true
+          skipIfReleaseExists: true