Bump urllib3 from 1.25.10 to 1.26.5

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](https://github.com/urllib3/urllib3/compare/1.25.10...1.26.5)

Signed-off-by: dependabot-preview[bot] <[email protected]>

requirements.txt

@@ -18,5 +18,5 @@ pywin32==227; sys_platform == 'win32'
 PyYAML==5.4.1
 requests==2.24.0
 texttable==1.6.2
-urllib3==1.25.10; python_version == '3.3'
+urllib3==1.26.5; python_version == '3.3'
 websocket-client==0.57.0