Bump log4js and karma-typescript (#73)

Bumps [log4js](https://github.com/log4js-node/log4js-node) to 6.4.1 and updates ancestor dependency [karma-typescript](https://github.com/monounity/karma-typescript). These dependencies need to be updated together.


Updates `log4js` from 1.1.1 to 6.4.1
- [Changelog](https://github.com/log4js-node/log4js-node/blob/master/CHANGELOG.md)
- [Commits](log4js-node/log4js-node@v1.1.1...v6.4.1)

Updates `karma-typescript` from 3.0.12 to 5.5.4
- [Release notes](https://github.com/monounity/karma-typescript/releases)
- [Commits](https://github.com/monounity/karma-typescript/commits)

---
updated-dependencies:
- dependency-name: log4js
  dependency-type: indirect
- dependency-name: karma-typescript
  dependency-type: direct:development
...

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