Adjust CI to only run once on pull requests

Author: filmor

.github/workflows/ci-arm.yml

@@ -1,9 +1,9 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
 name: ARM64 Tests
 
-on: [push, pull_request]
+on:
+  push:
+    branches: master
+  pull_request:
 
 jobs:
   build:

.github/workflows/ci.yml

@@ -1,9 +1,9 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
 name: Python Tests
 
-on: [push, pull_request]
+on:
+  push:
+    branches: master
+  pull_request:
 
 jobs:
   build: