fix(ci): do not use git diff

.github/workflows/cicd.yml

@@ -23,12 +23,15 @@ jobs:
       - name: Check for changes in source files
         id: check_changes
         run: |
-          if git diff --quiet HEAD^ HEAD -- '**/*.kt'; then
-            echo "No changes in Kotlin files."
-            echo "changed=false" >> $GITHUB_OUTPUT
-          else
+          # Check for changes in Kotlin files in the last commit
+          changed_files=$(git diff --name-only HEAD~1 HEAD | grep '\.kt$')
+          
+          if [ -n "$changed_files" ]; then
             echo "Changes detected in Kotlin files."
             echo "changed=true" >> $GITHUB_OUTPUT
+          else
+            echo "No changes in Kotlin files."
+            echo "changed=false" >> $GITHUB_OUTPUT
           fi
 
   linter: