adapt to windows sort

Author: boomanaiden154

.github/workflows/premerge.yaml

@@ -34,7 +34,7 @@ jobs:
         continue-on-error: true
         run: |
           modified_files=$(git diff --name-only HEAD~1...HEAD)
-          modified_dirs=$(echo "$modified_files" | cut -d'/' -f1 | sort -u)
+          modified_dirs=$(echo "$modified_files" | cut -d'/' -f1 | sort | uniq)
 
           echo $modified_files
           echo $modified_dirs