fix(ci-workflow): Allow changelog commits on forked repositories (#36311)

Signed-off-by: Fran Mulero <francisco-jose.mulero@broadcom.com>

.github/workflows/ci-pipeline.yml

@@ -3,7 +3,7 @@
 
 name: '[CI/CD] CI Pipeline'
 on: # rebuild any PRs and main branch changes
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - reopened
@@ -166,7 +166,7 @@ jobs:
     needs: [get-chart]
     name: Automatically update README, CRDs and CHANGELOG
     permissions:
-      contents: write
+      contents: read
     outputs:
       result: ${{ steps.update-pr.outputs.result }}
     if: needs.get-chart.outputs.result == 'ok'
@@ -176,12 +176,11 @@ jobs:
         with:
           ref: ${{github.event.pull_request.head.ref}}
           repository: ${{github.event.pull_request.head.repo.full_name}}
+          token: ${{ secrets.BITNAMI_BOT_TOKEN }}
           path: charts
       - name: Clone upstream bitnami/charts repository
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
         with:
-          ref: ${{github.event.pull_request.base.ref}}
-          repository: ${{github.event.pull_request.base.repo.full_name}}
           path: upstream-charts
       - name: Setup git configuration
         run: |