adjust compile flags to support Node16

Author: wandenberg

binding.gyp

@@ -117,7 +117,7 @@
 		],
 
 		"cflags" : [
-			"-std=c++11"
+			"-std=c++17"
 		],
 		"cflags!" : [
 			"-fno-exceptions"
@@ -131,7 +131,7 @@
 		],
 		"xcode_settings": {
 			"OTHER_CFLAGS": [
-				"-std=c++11",
+				"-std=c++17",
 				"-stdlib=libc++"
 			],
 			"GCC_ENABLE_CPP_EXCEPTIONS": "YES",