ci: FIx errors

.github/workflows/auto_pr.yml

@@ -56,9 +56,9 @@ jobs:
         git checkout dev
         git pull origin dev
         git checkout -b ${{ env.branch_name }}
-        echo "This commit ensures there is a difference." > .github/TIMESTAMP_$(date +%s).md
-        git add .github/TIMESTAMP_*.md
-        git commit -m "Add timestamp to ensure branch differences"
+        echo "$(date +%s%N)" > timestamp # Create a file with current timestamp in nanoseconds
+        git add timestamp.txt
+        git commit -m "Add timestamp file to ensure branch differences"
         git push origin ${{ env.branch_name }}
 
     - name: Fetch, rebase and push to existing branch