build(deps-dev): bump cross-env from 5.2.0 to 5.2.1

Bumps [cross-env](https://github.com/kentcdodds/cross-env) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/kentcdodds/cross-env/releases)
- [Changelog](https://github.com/kentcdodds/cross-env/blob/master/CHANGELOG.md)
- [Commits](kentcdodds/cross-env@v5.2.0...v5.2.1)

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

package.json

@@ -47,7 +47,7 @@
     "babel-preset-minify": "^0.5.1",
     "benchmark": "^2.1.4",
     "buble": "^0.19.8",
-    "cross-env": "^5.2.0",
+    "cross-env": "^5.2.1",
     "escodegen": "^1.12.0",
     "eslint": "^6.3.0",
     "eslint-config-prettier": "^6.1.0",