Bump urllib3 from 1.26.1 to 1.26.2 in /requirements (#16000)
Bump urllib3 from 1.26.1 to 1.26.2 in /requirements (#16000)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.1 to 1.26.2.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/master/CHANGES.rst)
- [Commits](https://github.com/urllib3/urllib3/compare/1.26.1...1.26.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
mozilla/olympia,wagnerand/addons-server,diox/olympia,bqbn/addons-server,mozilla/addons-server,mozilla/addons-server,mozilla/addons-server,wagnerand/addons-server,bqbn/addons-server,wagnerand/addons-server,wagnerand/addons-server,diox/olympia,mozilla/olympia,bqbn/addons-server,diox/olympia,mozilla/olympia,diox/olympia,mozilla/addons-server,mozilla/olympia,bqbn/addons-server