Update .github/workflows/report-size-deltas.yml

Co-authored-by: per1234 <accounts@perglass.com>

Author: giulcioffi

.github/workflows/report-size-deltas.yml

@@ -10,4 +10,4 @@ jobs:
 
     steps:
       - name: Comment size deltas reports to PRs
-        uses: arduino/actions/libraries/report-size-deltas@master
+        uses: arduino/report-size-deltas@main