Replace macos-latest with macos-13

Author: stefanistrate

.github/workflows/python_tests.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-13, windows-latest]
         python-version: ['3.9', '3.10', '3.11']
     steps:
       - name: Checkout repository