update oldest GHA macos runner to macos-14

Author: samschott

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-13, macos-latest, ubuntu-latest, windows-2022, windows-latest ]
+        os: [ macos-14, macos-latest, ubuntu-latest, windows-2022, windows-latest ]
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         include:
         - pre-command: ""