maint: use macos-12

.github/workflows/build.yml

@@ -106,7 +106,7 @@ jobs:
 
   build-mac:
     name: Build macOS
-    runs-on: macos-latest
+    runs-on: macos-12
     strategy:
       fail-fast: false
       matrix:

premake5.lua

@@ -69,7 +69,7 @@ filter {"system:windows"}
 filter {}
 
 filter {"system:macosx"}
-	systemversion "11.0"
+	systemversion "12.0"
 filter {}
 
 symbols "On"