Fix security vulnerability

See https://docs.google.com/document/d/1JBoQ17BU4iDXwofgzN1UOQY5Z61nBmwa17FJ_ZccLKI/edit?tab=t.0

Author: jermainezhimin

.github/workflows/content-checks.yml

@@ -1,6 +1,6 @@
 name: Content Checks
 on:
-  pull_request_target:
+  pull_request:
     types:
       - opened
       - synchronize
@@ -13,7 +13,7 @@ on:
   workflow_dispatch: # Allows you to run this workflow manually from the Actions tab
 concurrency:
   group: content-checks-${{ github.event_name }}-${{ github.event.pull_request.number }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request_target' }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 jobs:
   quality:
     name: Quality Checks
@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 2
 
       - name: Sparse checkout of content directory from fork to temp directory
-        if: ${{ github.event_name == 'pull_request_target' }}
+        if: ${{ github.event_name == 'pull_request' }}
         uses: actions/checkout@v3
         with:
           ref: ${{ github.event.pull_request.head.sha }}
@@ -39,7 +39,7 @@ jobs:
           fetch-depth: 1
 
       - name: Move the content from temp directory to main repo's content directory
-        if: ${{ github.event_name == 'pull_request_target' }}
+        if: ${{ github.event_name == 'pull_request' }}
         run: |
           rm -rf content/
           ls -la temp_content/content/