Bump log4js from 6.4.1 to 6.4.2 (#87)

Bumps [log4js](https://github.com/log4js-node/log4js-node) from 6.4.1 to 6.4.2.
- [Release notes](https://github.com/log4js-node/log4js-node/releases)
- [Changelog](https://github.com/log4js-node/log4js-node/blob/master/CHANGELOG.md)
- [Commits](log4js-node/log4js-node@v6.4.1...v6.4.2)

---
updated-dependencies:
- dependency-name: log4js
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pedro Lopes <83576881+pedrompflopes@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -9,7 +9,7 @@
     "README.md"
   ],
   "dependencies": {
-    "log4js": "^6.4.1"
+    "log4js": "^6.4.2"
   },
   "scripts": {
     "build": "tsc",