Add identical forks only if there are any

Author: TomasHubelbauer

.github/workflows/main.yml

@@ -62,12 +62,16 @@ jobs:
 
           # Stage the Git index change of the auto-generated files
           # Note that followers.json+repositories.json+todos.json are artifacts
-          git add readme.md prs.md issues.md identical-forks.md
+          git add readme.md prs.md issues.md
           git add by-name-asc.md by-name-desc.md
           git add by-pushed_at-asc.md by-pushed_at-desc.md
           git add by-size-asc.md by-size-desc.md
           git add by-updated_at-asc.md by-updated_at-desc.md
 
+          if [ -e identical-forks.md ]; then
+            git add identical-forks.md
+          fi
+
           # Bail if there are no changes to commit and hence no GitHub Pages to build
           if git diff-index --quiet HEAD --; then
             exit