fix create pr

Signed-off-by: Alexander Dahmen <alexander.dahmen@inovex.de>

Author: Fyusel

.github/workflows/upgrade-provider.yaml

@@ -77,7 +77,7 @@ jobs:
         git add --all
         git commit -m "make generate_sdks"
         git push --set-upstream origin "$BRANCH_NAME"
-        gh pr create --title Upgrade terraform-provider-stackit to "$LATEST_TAG" --base main --head "$BRANCH_NAME"
+        gh pr create --title "Upgrade terraform-provider-stackit to $LATEST_TAG" --base main --head "$BRANCH_NAME"