Update dev-dependencies

Author: wooorm

package.json

@@ -53,14 +53,14 @@
     "prettier": "^2.0.0",
     "remark": "^14.0.0",
     "remark-cli": "^10.0.0",
-    "remark-gfm": "^2.0.0",
+    "remark-gfm": "^3.0.0",
     "remark-preset-wooorm": "^9.0.0",
     "rimraf": "^3.0.0",
     "tape": "^5.0.0",
     "type-coverage": "^2.0.0",
     "type-fest": "^2.0.0",
     "typescript": "^4.0.0",
-    "xo": "^0.44.0"
+    "xo": "^0.45.0"
   },
   "scripts": {
     "build": "rimraf \"test/**/*.d.ts\" \"*.d.ts\" && tsc && type-coverage",

test/fixtures/mention-team-reloaded/output.md

@@ -60,7 +60,7 @@ After a right square bracket ][**@username/team**](https://github.com/username/t
 
 After a caret ^[**@username/team**](https://github.com/username/team).
 
-After an underscore \_\@username/team.
+After an underscore \_@username/team.
 
 After a grave accent \`@username/team.
 

test/fixtures/mention-user-reloaded/output.md

@@ -60,7 +60,7 @@ After a right square bracket ][**@username**](https://github.com/username).
 
 After a caret ^[**@username**](https://github.com/username).
 
-After an underscore \_\@username.
+After an underscore \_@username.
 
 After a grave accent \`@username.