build(deps-dev): bump cross-env from 5.2.1 to 6.0.3 (#1570)

Bumps [cross-env](https://github.com/kentcdodds/cross-env) from 5.2.1 to 6.0.3.
- [Release notes](https://github.com/kentcdodds/cross-env/releases)
- [Changelog](https://github.com/kentcdodds/cross-env/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kentcdodds/cross-env/compare/v5.2.1...v6.0.3)

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

package.json

@@ -71,7 +71,7 @@
     "@verdaccio/eslint-config": "8.1.0",
     "@verdaccio/types": "8.1.0",
     "codecov": "3.5.0",
-    "cross-env": "5.2.1",
+    "cross-env": "6.0.3",
     "detect-secrets": "1.0.5",
     "eslint": "5.16.0",
     "get-stdin": "7.0.0",