chore(deps): bump urllib3 in /rootfs/usr/local/lib/web/backend

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.6 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/1.25.6...1.26.5)

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

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

rootfs/usr/local/lib/web/backend/requirements.txt

@@ -14,6 +14,6 @@ MarkupSafe==1.1.1
 meld3==2.0.0
 requests==2.22.0
 six==1.12.0
-urllib3==1.25.6
+urllib3==1.26.5
 websocket-client==0.47.0
 Werkzeug==0.16.0