Use forked github-repo-stats with higher data point limits

Switch to sbryngelson/github-repo-stats fork which adds
views/clones downsampling and increases chart data point limits
to prevent report truncation on long-running repos.

Author: sbryngelson

.github/workflows/repostats.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: run-ghrs
-        uses: jgehrcke/github-repo-stats@main
+        uses: sbryngelson/github-repo-stats@main
         with:
           # Define the stats repository (the repo to fetch
           # stats for and to generate the report for).