Upgrade: Bump urllib3 from 1.26.8 to 1.26.9 (#51)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.8 to 1.26.9.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/1.26.9/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.8...1.26.9)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Author: dependabot[bot]

requirements.txt

@@ -11,6 +11,6 @@ MarkupSafe==2.1.1
 openttd-helpers==1.0.1
 requests==2.27.1
 sentry-sdk==1.5.12
-urllib3==1.26.8
+urllib3==1.26.9
 Werkzeug==2.1.2
 zipp==3.8.0