test also push to branches on gh actions

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

.github/workflows/test.yml

@@ -1,6 +1,11 @@
 name: Test
 on:
-  - pull_request
+  pull_request:
+    branches:
+      - "*"
+  push:
+    branches:
+      - master
 jobs:
   build:
     name: Test