Update contributors action reference after repo transfer

The github/contributors action was transferred to
github-community-projects/contributors. Update references
to point to the new location.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: zkoppert

.github/workflows/contributor_report.yaml

@@ -27,7 +27,7 @@ jobs:
           echo "END_DATE=$end_date" >> "$GITHUB_ENV"
 
       - name: Run contributor action
-        uses: github/contributors@0d5adc3833e89ee1f4145744f5d69313cf5ea238 # v1.7.8
+        uses: github-community-projects/contributors@0d5adc3833e89ee1f4145744f5d69313cf5ea238 # v1.7.8
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           START_DATE: ${{ env.START_DATE }}