ci: update runner targets for windows, macos

Author: ethomson

.github/workflows/ci.yml

@@ -38,10 +38,10 @@ jobs:
     strategy:
       matrix:
         arch: [ x64 ]
-        os: [ windows-2019, windows-2022, macos-13 ]
+        os: [ windows-2022, windows-2025, macos-14, macos-15 ]
         tfm: [ net472, net8.0, net9.0 ]
         exclude:
-          - os: macos-13
+          - os: macos-14
             tfm: net472
         include:
           - arch: arm64