Fix PR first response to work for outside contributors too

.github/workflows/pr-first-response.yml

@@ -1,12 +1,15 @@
 name: pr-first-response
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened]
 
 jobs: 
   send-response:
     runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write    
     steps:
       - name: Install dependencies
         run: |