build(deps): bump camel-case from 3.0.0 to 4.0.0

Bumps [camel-case](https://github.com/blakeembrey/change-case) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/blakeembrey/change-case/releases)
- [Commits](https://github.com/blakeembrey/change-case/compare/v3.0.0...camel-case@4.0.0)

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

package.json

@@ -44,7 +44,7 @@
   },
   "dependencies": {
     "bluebird": "^3.5.2",
-    "camel-case": "^3.0.0",
+    "camel-case": "^4.0.0",
     "cross-spawn": "^7.0.0",
     "highlight.js": "^9.13.1",
     "striptags": "^3.1.1"