Update GitHub Runtests workflow

- Run on push to main branch only.
- Update Julia version.
- Enable MacOS.
- Disable fail-fast.

Author: GerhardHippmann

.github/workflows/test.yml

@@ -2,21 +2,23 @@ name: Run tests
 
 env:
   JULIA_NUM_THREADS: 4
-  
 on:
-  - push
+  push:
+    branches:
+      - main
 jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: true
+      fail-fast: false
       matrix:
         version:
-          - '1.7'
+          - '1.7.2'
         os:
           - ubuntu-latest
           - windows-latest
+          - macos-latest
         arch:
           - x64
     steps: