Fix to run on PRs to the yml itself.

Author: ryanwilson

.github/workflows/archiving.yml

@@ -1,6 +1,9 @@
 name: archiving
 
 on:
+  pull_request:
+    paths:
+    - '.github/workflows/archiving.yml'
   schedule:
     # Run every day at 2am (PST) - cron uses UTC times
     # This is set to 3 hours after zip workflow finishes so zip testing can run after.
@@ -10,7 +13,7 @@ jobs:
   # Archive tests for pods that support iOS only.
   pods-ios-only-cron:
     # Don't run on private repo.
-    #    if: github.event_name == 'schedule' && github.repository != 'FirebasePrivate/firebase-ios-sdk'
+    if: github.repository != 'FirebasePrivate/firebase-ios-sdk'
 
     runs-on: macOS-latest
     strategy:
@@ -28,7 +31,7 @@ jobs:
   # Archive tests for pods that support iOS, tvOS, and macOS.
   pods-ios-tvos-macos-cron:
     # Don't run on private repo.
-    #if: github.event_name == 'schedule' && github.repository != 'FirebasePrivate/firebase-ios-sdk'
+    if: github.repository != 'FirebasePrivate/firebase-ios-sdk'
 
     runs-on: macOS-latest
     strategy: