Bump dotenv from 10.0.0 to 16.4.1 in /cra-server

Bumps [dotenv](https://github.com/motdotla/dotenv) from 10.0.0 to 16.4.1.
- [Changelog](https://github.com/motdotla/dotenv/blob/master/CHANGELOG.md)
- [Commits](motdotla/dotenv@v10.0.0...v16.4.1)

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

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

cra-server/package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "axios": "^0.21.4",
     "body-parser": "^1.19.1",
-    "dotenv": "^10.0.0",
+    "dotenv": "^16.4.1",
     "express": "^4.17.2",
     "express-rate-limit": "^7.1.5",
     "express-session": "^1.17.2",