Bump FluentAssertions from 5.7.0 to 5.9.0 (#3616)
Bump FluentAssertions from 5.7.0 to 5.9.0 (#3616)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 5.7.0 to 5.9.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Commits](https://github.com/fluentassertions/fluentassertions/compare/5.7.0...5.9.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
IdentityServer/IdentityServer4,IdentityServer/IdentityServer4,MienDev/IdentityServer4,IdentityServer/IdentityServer4,MienDev/IdentityServer4,MienDev/IdentityServer4,MienDev/IdentityServer4,IdentityServer/IdentityServer4