GIT_SILENT: Fix variable

CMakePresets.json

@@ -29,7 +29,7 @@
             "binaryDir": "${sourceDir}/build-unity",
             "cacheVariables": {
                 "CMAKE_BUILD_TYPE": "Debug",
-		"USE_UNITY_CMAKE_SUPPORT": "ON",
+		"CMAKE_UNITY_BUILD": "ON",
 		"CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
             }
         },