add support for spring boot 3

[tvcsantos]

Spring Boot 3 requires JDK 17 and this library is configured to be source compatible with JDK 1.8.

Can you please add support. I was wondering if it was possible to maintain compatibility for all modules except for the strikt-spring submodule. Meaning that everything would still work and only the people requiring "strikt-spring" would have to use JDK 17.

Other option would be to drop support for the older versions since JDK 17 is the latest LTS.

Thanks for this library ;). If you need something on my end please feel free to ask :)

[tvcsantos]

I think I managed to figure out how to add the support and open the PR #289. Ty