ci(workflows): [integrity] update pull_request event activity types

Signed-off-by: Lexus Drumgold <[email protected]>

.github/workflows/integrity.yml

@@ -2,6 +2,9 @@
 #
 # References:
 #
+# - https://docs.github.com/actions/learn-github-actions/expressions
+# - https://docs.github.com/actions/using-workflows/events-that-trigger-workflows#create
+# - https://docs.github.com/actions/using-workflows/events-that-trigger-workflows#pull_request
 # - https://github.com/actions/checkout
 # - https://yarnpkg.com/cli/dedupe
 
@@ -16,6 +19,10 @@ on:
       - .github/workflows/integrity.yml
       - .yarnrc.yml
       - yarn.lock
+    types:
+      - opened
+      - reopened
+      - synchronize
   push:
     branches:
       - main