Update dev-dependencies

Author: wooorm

package.json

@@ -39,10 +39,10 @@
     "micromark-extension-footnote": "~0.3.0",
     "nyc": "^15.0.0",
     "prettier": "^2.0.0",
-    "remark-cli": "^9.0.0-alpha.1",
+    "remark-cli": "^9.0.0",
     "remark-preset-wooorm": "^8.0.0",
     "tape": "^5.0.0",
-    "xo": "^0.33.0"
+    "xo": "^0.35.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",