revertme: add pull_request to nightly workflow for testing

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

.github/workflows/nightly.yml

@@ -4,6 +4,8 @@
 name: Run nightly package version and status checks
 
 on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
   schedule:
     - cron: '0 2 * * *'
   workflow_dispatch: