Update dev-dependencies

Author: wooorm

package.json

@@ -51,7 +51,7 @@
     "github-slugger": "^1.0.0",
     "hast-util-to-html": "^8.0.0",
     "mdast-util-from-markdown": "^1.0.0",
-    "mdast-util-to-hast": "^11.0.0",
+    "mdast-util-to-hast": "^12.0.0",
     "mdast-util-to-markdown": "^1.0.0",
     "micromark-extension-gfm": "^2.0.0",
     "node-fetch": "^3.0.0",
@@ -62,7 +62,7 @@
     "tape": "^5.0.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
-    "xo": "^0.45.0"
+    "xo": "^0.47.0"
   },
   "scripts": {
     "build": "rimraf \"*.d.ts\" && tsc && type-coverage",