(PE-40707) trigger on PR

Author: davidmalloncares

.github/workflows/validate-puppetcore-gem-sources.yml

@@ -1,6 +1,28 @@
 ---
 name: Validate Puppetcore Gem Sources
 on:
+  pull_request:
+    paths:
+      - .github/workflows/**/*
+      - spec/**/*
+      - lib/**/*
+      - tasks/**/*
+      - functions/**/*
+      - types/**/*
+      - plans/**/*
+      - hiera/**/*
+      - manifests/**/*
+      - templates/**/*
+      - files/**/*
+      - metadata.json
+      - Rakefile
+      - Gemfile
+      - provision.yaml
+      - .rspec
+      - .rubocop.yml
+      - .puppet-lint.rc
+      - .fixtures.yml
+    branches: [main]
   workflow_dispatch:
     inputs:
       ref: