chore(release): 5.2.0 [skip ci]

# [5.2.0](https://gitlab.ics.muni.cz/perun-proxy-aai/java/perun-spRegistration-app/compare/v5.1.5...v5.2.0) (2023-09-08)

### Features

*  MFA Categories configurable entityless attr key ([bb247ad2](https://gitlab.ics.muni.cz/perun-proxy-aai/java/perun-spRegistration-app/commit/bb247ad225fe8ccc4bb21c61f39bfed77fe91fee))