ci: only run coverity-scan on void-linux/xbps repo

Author: Duncaen

.github/workflows/coverity-scan.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   latest:
+    if: github.repository == 'void-linux/xbps'
     runs-on: ubuntu-latest
     env:
       TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}