Update dev-dependencies

Author: wooorm

package.json

@@ -61,10 +61,9 @@
     "remark-preset-wooorm": "^8.0.0",
     "rimraf": "^3.0.0",
     "tape": "^5.0.0",
-    "tsd": "^0.14.0",
+    "tsd": "^0.17.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
-    "unified": "^9.0.0",
     "xo": "^0.39.0"
   },
   "scripts": {