Fixes linting error

Author: simonbs

.github/workflows/check-changes-to-env.yml

@@ -17,7 +17,7 @@ jobs:
       id: get-pr-number
       run: |
         PR_NUMBER=$(echo "${GITHUB_REF}" | awk 'BEGIN { FS = "/" } ; { print $3 }')
-        echo "pr-number=${PR_NUMBER}" >> $GITHUB_OUTPUT
+        echo "pr-number=${PR_NUMBER}" >> "$GITHUB_OUTPUT"
     - name: Comment when dummy.txt changes
       uses: actions/github-script@v7
       env: