Update dev-dependencies

Author: wooorm

package.json

@@ -53,14 +53,14 @@
     "remark": "^14.0.0",
     "remark-cli": "^10.0.0",
     "remark-frontmatter": "^4.0.0",
-    "remark-gfm": "^2.0.0",
+    "remark-gfm": "^3.0.0",
     "remark-preset-wooorm": "^9.0.0",
     "rimraf": "^3.0.0",
     "tape": "^5.0.0",
     "to-vfile": "^7.0.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
-    "xo": "^0.44.0"
+    "xo": "^0.46.0"
   },
   "scripts": {
     "prepack": "npm run build && npm run format",