fix(emmet): use ramya-rao-a/css-parser#vscode

close vuejs/language-tools#4712

Author: johnsoncodehk

packages/emmet/package.json

@@ -24,7 +24,7 @@
 		"url": "https://github.com/johnsoncodehk"
 	},
 	"dependencies": {
-		"@emmetio/css-parser": "^0.4.0",
+		"@emmetio/css-parser": "ramya-rao-a/css-parser#vscode",
 		"@emmetio/html-matcher": "^1.3.0",
 		"@vscode/emmet-helper": "^2.9.3",
 		"vscode-uri": "^3.0.8"