Update warning workflow

.github/workflows/pr-release-branch-warning.yml

@@ -1,26 +1,42 @@
 name: Release branch warning
 on:
-  pull_request:
+  pull_request_target:
     types:
       - opened
+      - synchronize
 
       # This is triggered when the base branch changes; handles the case where you open a PR against main then change the
       # base branch to a release branch.
       - edited
     branches:
       - release/client/**
       - release/server/**
+      - test/release/**
 
 permissions:
+  # Needed to write the comments to the PRs themselves
   pull-requests: write
 
 jobs:
   warning:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # ratchet:actions/checkout@v4
+        with:
+          persist-credentials: false
+          submodules: false
+
+      - name: Read warning template file
+        id: templateFile
+        uses: juliangruber/read-file-action@b549046febe0fe86f8cb4f93c24e284433f9ab58 # ratchet:juliangruber/read-file-action@v1
+        with:
+          path: ${{ github.workspace }}/.github/workflows/data/release-branch-warning.md
+
       - name: Post warning in comment
         # release notes: https://github.com/marocchino/sticky-pull-request-comment/releases/tag/v2.9.0
         uses: marocchino/sticky-pull-request-comment@331f8f5b4215f0445d3c07b4967662a32a2d3e31 # ratchet:marocchino/[email protected]
         with:
+          header: release-warning
           path: ${{ github.workspace }}/.github/workflows/data/release-branch-warning.md
+          # message: ${{ steps.templateFile.outputs.content }}
           only_create: true