Add pull-requests permission to migration workflow

Author: aeshub

.github/workflows/run_development_migrations.yml

@@ -5,13 +5,15 @@ on:
 
 permissions:
   contents: read
+  pull-requests: read
 
 jobs:
   run_migrations:
     name: Update database in Development
     uses: equinor/armada/.github/workflows/run_dotnet_migrations.yml@main
     permissions:
       contents: read
+      pull-requests: read
     with:
       environment: Development
       working_directory: api