Update release-drafter workflow to match their docs

Author: gaby

.github/workflows/release-drafter.yml

@@ -4,9 +4,21 @@ on:
   push:
     branches:
       - main
+  # pull_request event is required only for autolabeler
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+permissions:
+  contents: read
 
 jobs:
   update_release_draft:
+    permissions:
+      # write permission is required to create a github release
+      contents: write
+      # write permission is required for autolabeler
+      # otherwise, read permission is required at least
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
       # (Optional) GitHub Enterprise requires GHE_HOST variable set