Bump react-helmet from 5.2.1 to 6.1.0

Bumps [react-helmet](https://github.com/nfl/react-helmet) from 5.2.1 to 6.1.0.
- [Release notes](https://github.com/nfl/react-helmet/releases)
- [Changelog](https://github.com/nfl/react-helmet/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nfl/react-helmet/commits/6.1.0)

---
updated-dependencies:
- dependency-name: react-helmet
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -50,7 +50,7 @@
     "react": "^16.13.1",
     "react-datetime": "^2.16.3",
     "react-dom": "^16.13.1",
-    "react-helmet": "^5.2.0",
+    "react-helmet": "^6.1.0",
     "react-icon": "^1.0.0",
     "react-icons": "^4.4.0",
     "react-id-generator": "^3.0.1",