Deduplicate test CI runs

StanFromIreland · web-flow · commit c17df21221f4 · 2025-09-16T09:43:09.000+01:00
These were running twice on every PR.
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -1,6 +1,11 @@
 name: tzdata contents
 
-on: [push, pull_request, workflow_dispatch]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
 
 jobs:
   tests:
