[Security] Bump urllib3 from 1.24.1 to 1.24.2

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] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -43,7 +43,7 @@ rjsmin==1.0.12
     # via django-compressor
 tinycss2==0.5
     # via http-crawler
-urllib3==1.24.1
+urllib3==1.24.2
     # via requests
 webencodings==0.5
     # via tinycss2