Merge pull request #52 from puppetlabs/maint_one

(maint) Change from `pull_request_target` to `pull_request`

Author: pmcmaw

Diff for: .github/workflows/labeller.yml

@@ -4,7 +4,7 @@ on:
   issues:
     types:
       - opened
-  pull_request_target:
+  pull_request:
     types:
       - opened