action: bump macos version

Author: brentp

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-13]
+        os: [ubuntu-20.04, macos-14]
         version:
         - 1.6.18
         - 2.0.2