chore: bump xo from 3.0.2 to 4.0.0 in the development-dependencies group

Bumps the development-dependencies group with 1 update: [xo](https://github.com/xojs/xo).


Updates `xo` from 3.0.2 to 4.0.0
- [Release notes](https://github.com/xojs/xo/releases)
- [Commits](xojs/xo@v3.0.2...v4.0.0)

---
updated-dependencies:
- dependency-name: xo
  dependency-version: 4.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: development-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -40,6 +40,6 @@
 	"devDependencies": {
 		"ava": "^8",
 		"tsd": "^0.33",
-		"xo": "^3.0"
+		"xo": "^4.0"
 	}
 }