fix: update GitHub Actions workflow ensuring unicode is used

.gitea/workflows/update-readme.yaml

@@ -16,10 +16,13 @@ jobs:
 
 
       - name: Update README
+        env:
+          LANG: en_US.UTF-8
+          LC_ALL: en_US.UTF-8
         run: |
           LOC=$(grep '"total_code"' public/code-stats.json | sed 's/[^0-9]*//g')
           FORMATTED_LOC=$(printf "%'d" $LOC)
-          
+
           echo "Injecting $FORMATTED_LOC into README.template..."
 
           sed "s/REPLACE_ME_LOC/$FORMATTED_LOC/g" README.template > README.md