Bump xo from 0.38.2 to 0.40.0

Bumps [xo](https://github.com/xojs/xo) from 0.38.2 to 0.40.0.
- [Release notes](https://github.com/xojs/xo/releases)
- [Commits](xojs/xo@v0.38.2...v0.40.0)

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

Author: dependabot-preview[bot]

package.json

@@ -64,6 +64,6 @@
         "domexception": "^2.0.1",
         "node-fetch": "^3.0.0-beta.9",
         "typescript": "^4.2.4",
-        "xo": "^0.38.2"
+        "xo": "^0.40.0"
     }
 }