Bump urllib3 from 1.25.3 to 1.26.5

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.3 to 1.26.5.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](https://github.com/urllib3/urllib3/compare/1.25.3...1.26.5)

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

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

requirements.txt

@@ -10,6 +10,6 @@ psycopg2-binary==2.7.4
 pytz==2018.3
 sentry-sdk==0.20.3
 ujson==1.35
-urllib3==1.25.3
+urllib3==1.26.5
 wget==3.2
 yarl==1.1.1