Bump eslint-config-xo from 0.27.2 to 0.29.1

Bumps [eslint-config-xo](https://github.com/xojs/eslint-config-xo) from 0.27.2 to 0.29.1.
- [Release notes](https://github.com/xojs/eslint-config-xo/releases)
- [Commits](xojs/eslint-config-xo@v0.27.2...v0.29.1)

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

package.json

@@ -29,7 +29,7 @@
     "lint-staged": "^9.2.0",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.1.0",
-    "eslint-config-xo": "^0.27.1",
+    "eslint-config-xo": "^0.29.1",
     "jest": "^24.8.0"
   },
   "engines": {