Bump urllib3 from 1.26.2 to 1.26.4

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.2 to 1.26.4.
- [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/1.26.2...1.26.4

)

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

requirements.txt

@@ -14,6 +14,6 @@ requests==2.25.1
 sqlparse==0.4.0
 twitchio==1.1.0
 typing-extensions==3.7.4.3
-urllib3==1.26.2
+urllib3==1.26.4
 websockets==8.1
 yarl==1.6.3