chore(release): 9.0.6 [skip ci]

## [9.0.6](https://gitlab.ics.muni.cz/perun-proxy-aai/simplesamlphp/simplesamlphp-module-perun/compare/v9.0.5...v9.0.6) (2022-12-12)

### Bug Fixes

* allow alphanumerical backup codes ([68c24109](https://gitlab.ics.muni.cz/perun-proxy-aai/simplesamlphp/simplesamlphp-module-perun/commit/68c24109fc74b6ad80371c0282e713bc49cfa796))