fix(package): update dependencies

Author: LasaleFamine

package.json

@@ -36,18 +36,18 @@
 		"polymer-lit"
 	],
 	"dependencies": {
-		"jscodeshift": "0.5.0",
+		"jscodeshift": "0.5.1",
 		"loader-utils": "1.1.0",
-		"parse5": "4.0.0",
-		"postcss": "6.0.22",
-		"postcss-load-config": "1.2.0"
+		"parse5": "5.0.0",
+		"postcss": "7.0.0",
+		"postcss-load-config": "2.0.0"
 	},
 	"devDependencies": {
-		"ava": "next",
-		"codecov": "3.0.1",
-		"nyc": "11.7.3",
-		"standard-version": "4.3.0",
-		"xo": "0.21.0"
+		"ava": "1.0.0-beta.4",
+		"codecov": "3.0.4",
+		"nyc": "12.0.2",
+		"standard-version": "4.4.0",
+		"xo": "0.21.1"
 	},
 	"peerDependencies": {
 		"webpack": "^4"