Bump eventemitter2 from 4.1.2 to 6.4.4

Bumps [eventemitter2](https://github.com/hij1nx/EventEmitter2) from 4.1.2 to 6.4.4.
- [Release notes](https://github.com/hij1nx/EventEmitter2/releases)
- [Changelog](https://github.com/EventEmitter2/EventEmitter2/blob/master/CHANGELOG.md)
- [Commits](https://github.com/hij1nx/EventEmitter2/commits/v6.4.4)

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

package.json

@@ -7,7 +7,7 @@
   "main": "./build/ros3d.cjs.js",
   "module": "./build/ros3d.esm.js",
   "dependencies": {
-    "eventemitter2": "^4.1.0",
+    "eventemitter2": "^6.4.4",
     "roslib": "^1.0.0",
     "three": "^0.89.0"
   },