Update label.yml

Author: DuncanFaulkner

.github/workflows/label.yml

@@ -17,7 +17,7 @@ jobs:
       pull-requests: write
 
     steps:
-    - uses: actions/labeler@v4
+    - uses: actions/labeler@v2
       with:
         repo-token: "${{ secrets.GITHUB_TOKEN }}"