Fix github actions macOS legacy runner

Author: timothyschoen

.github/workflows/cmake.yml

@@ -77,7 +77,7 @@ jobs:
           files: plugdata-macOS-Universal
 
   macos-legacy-build:
-    runs-on: macos-13
+    runs-on: macos-14
 
     steps:
       - uses: actions/checkout@v4