Bump dawidd6/action-download-artifact action to v21

Author: renovate[bot]

.github/workflows/quality-monitor-comment-pr.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Checkout PR
         uses: actions/checkout@v6
       - name: Download reference reports from main branch
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v21
         with:
           workflow: quality-monitor-build.yml
           branch: main

.github/workflows/quality-monitor-comment.yml

@@ -31,7 +31,7 @@ jobs:
           echo "HEAD_SHA=$HEAD_SHA"
           echo "REPO=$REPO"
       - name: Download reference reports from main branch
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v21
         with:
           workflow: quality-monitor-build.yml
           branch: main