Update Github Actions

Author: rushter

.github/workflows/pythonpackage.yml

@@ -1,6 +1,10 @@
 name: Python package
 
-on: [push]
+on:
+  pull_request:
+    branches:
+      - master
+
 
 jobs:
   test:
@@ -10,6 +14,7 @@ jobs:
         python-version: ["3.11", "3.12", "3.13" ]
         platform: [ubuntu-24.04, macos-latest]
     runs-on: ${{ matrix.platform }}
+    timeout-minutes: 6
     steps:
     - uses: actions/checkout@v4
       with:
@@ -36,6 +41,7 @@ jobs:
         python-version: ["3.11", "3.12", "3.13" ]
         platform: [ ubuntu-24.04 ]
     runs-on: ${{ matrix.platform }}
+    timeout-minutes: 6
     steps:
       - uses: actions/checkout@v4
         with: