Update xo

Author: wooorm

package.json

@@ -41,12 +41,12 @@
     "prettier": "^2.0.0",
     "remark-cli": "^9.0.0",
     "remark-preset-wooorm": "^8.0.0",
-    "rimraf": "^3.0.2",
+    "rimraf": "^3.0.0",
     "tape": "^5.0.0",
-    "type-coverage": "^2.17.5",
-    "typescript": "^4.2.4",
+    "type-coverage": "^2.0.0",
+    "typescript": "^4.0.0",
     "unist-builder": "^3.0.0",
-    "xo": "^0.39.0"
+    "xo": "^0.42.0"
   },
   "scripts": {
     "prepack": "npm run build && npm run format",