Update greetings.yml (#7965)

5d6fbb1e · Glenn Jocher · GitHub · d07f9ce0 · 5d6fbb1e
--- a/.github/workflows/greetings.yml
+++ b/.github/workflows/greetings.yml
@@ -2,7 +2,11 @@
 name: Greetings
-on: [pull_request_target, issues]
+on:
+  pull_request_target:
+    types: [opened]
+  issues:
+    types: [opened]
 jobs:
  greeting: