Upgrade to wpcs 3.0

Also upgrades to vipcs 3.0 for necessary changes there.

Author: rmccue

composer.json

@@ -5,8 +5,8 @@
 	"license": "GPL-2.0-or-later",
 	"require": {
 		"php": ">=7.1",
-		"wp-coding-standards/wpcs": "2.3.0",
-		"automattic/vipwpcs": "2.0.0",
+		"wp-coding-standards/wpcs": "~3.0.0",
+		"automattic/vipwpcs": "~3.0.0",
 		"fig-r/psr2r-sniffer": "^0.5.0",
 		"phpcompatibility/phpcompatibility-wp": "^2.0.0",
 		"squizlabs/php_codesniffer": "~3.5",