🤖 config(package.json): Enable linting with xo.

These changes were automatically generated by a transform whose code can be found at:
  - https://github.com/make-github-pseudonymous-again/rejuvenate/blob/3eb37da7d78b30a6f28492864d065b8d8043ab23/src/transforms/package.json:scripts-lint-use-xo.js
Please contact the author of the transform if you believe there was an error.

package.json

@@ -46,7 +46,7 @@
     "debug": "NODE_ENV=debug npm run test -- -st --fail-fast",
     "dev": "npm run lint -- --fix && npm run cover -- -- -st --fail-fast",
     "install-hooks": "husky install",
-    "lint": "true",
+    "lint": "xo",
     "lint-config": "fixpack --dryRun",
     "lint-config-and-fix": "fixpack || fixpack",
     "postinstall": "npm run install-hooks",