build(deps): bump urllib3 from 1.25.10 to 1.26.5 (#280)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.10 to 1.26.5.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.25.10...1.26.5)

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

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

Author: dependabot[bot]

requirements.txt

@@ -112,7 +112,7 @@ stevedore==3.2.2
 traitlets==5.0.4
 typed-ast==1.4.1
 typing-extensions==3.7.4.3
-urllib3==1.25.10
+urllib3==1.26.5
 vine==5.0.0
 wcwidth==0.2.5
 Werkzeug==1.0.1