Bump oauthlib from 0.7.2 to 2.1.0
Bump oauthlib from 0.7.2 to 2.1.0

Bumps [oauthlib](https://github.com/oauthlib/oauthlib) from 0.7.2 to 2.1.0.
- [Release notes](https://github.com/oauthlib/oauthlib/releases)
- [Changelog](https://github.com/oauthlib/oauthlib/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/oauthlib/oauthlib/compare/0.7.2...v2.1.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
DemocracyClub/yournextrepresentative,DemocracyClub/yournextrepresentative,DemocracyClub/yournextrepresentative