Add top-level permissions block with pull-requests: write to pr-template-check.yml

Co-authored-by: Marshall-Hallenbeck <1518719+Marshall-Hallenbeck@users.noreply.github.com>

Author: Copilot

.github/workflows/pr-template-check.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
     types: [opened, edited]
 
+permissions:
+  pull-requests: write
+
 jobs:
   check-template:
     runs-on: ubuntu-latest