Bump urllib3 from 1.26.17 to 1.26.18

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.17 to 1.26.18.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.17...1.26.18)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -107,7 +107,7 @@ tomli==2.0.1
 traitlets==5.1.1
 typing_extensions==4.1.1
 univers==30.10.0
-urllib3==1.26.17
+urllib3==1.26.18
 wcwidth==0.2.5
 websocket-client==0.59.0
 yarl==1.7.2