try running with checkout action

Author: 0marperez

.github/actions/merge-main/action.yml

@@ -7,21 +7,15 @@ inputs:
 runs:
   using: composite
   steps:
-    - name: Checkout repository
+    - name: Merge Main
       uses: actions/checkout@v4
       with:
         fetch-depth: 0
         token: ${{ secrets.CI_USER_PAT }}
-
-    - name: Set up Git
-      shell: bash
-      run: |
+    - run: |
         git config user.name aws-sdk-kotlin-ci
         git config user.email "[email protected]"
 
-    - name: Run Script
-      shell: bash
-      run: |
         input=${{ inputs.exempt-branches }}
 
         function fetch_latest_changes() {