replace changed files action with git diff

.github/workflows/score_new_plugins.yml

@@ -45,18 +45,12 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v2
-
-      - name: Get changed files
-        uses: dorny/[email protected]
-        id: filter
         with:
-          list-files: shell
-          filters: |
-            changed:
-              - '**'
+          fetch-depth: 0
+
       - name: Save changed files to env var
-        run: echo "CHANGED_FILES=${{ steps.filter.outputs.changed_files }}" >> $GITHUB_ENV
-
+        run: echo "CHANGED_FILES=$(git diff --name-only origin/main origin/$GITHUB_HEAD_REF | tr '\n' ' ')"  >> $GITHUB_ENV
+        
       - name: Get scoring info
         run: |
           python -m pip install .