[Security] Bump urllib3 from 1.24.1 to 1.24.2 (#69)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.24.1 to 1.24.2. **This update includes security fixes.**
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/master/CHANGES.rst)
- [Commits](urllib3/urllib3@1.24.1...1.24.2)

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