Lint only changed files in the PR

.github/workflows/linter.yml

@@ -21,6 +21,14 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Get changed files
+        id: files
+        run: |
+            # Get a list of files changed between the last commit and the previous commit
+            CHANGED_FILES=$(git diff --name-only ${{ github.event.before }} ${{ github.sha }})
+            echo "Changed files: $CHANGED_FILES"
+            echo "::set-output name=changed_files::$CHANGED_FILES"
+
       - name: Lint Code Base
         uses: super-linter/super-linter@v5
         env:
@@ -29,3 +37,5 @@ jobs:
           IGNORE_GITIGNORED_FILES: true
           VALIDATE_JSCPD: false
           JAVA_FILE_NAME: checkstyle.xml
+        with:
+          changed_files: ${{ steps.files.outputs.changed_files }}