Update Breakage.yml

Author: amontoison

.github/workflows/Breakage.yml

@@ -103,7 +103,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           name: pr
           path: pr/