Cleanup code

[ngocnhan-tran1996]

• MemberCategory#DECLARED_FIELDS has been deprecated since Spring Framework 7.0. More detail
• Add @since tag. Implement UserDetailsPasswordService in JdbcUserDetailsManager #17071
• Polish JdbcUserDetailsManagerTests

[jzheaux]

Thanks, @ngocnhan-tran1996. So they can be tracked with #16889, will you please separate the Spring Framework deprecations from the other changes and add the following to the end of that separate commit:

Issue gh-16889

[ngocnhan-tran1996]

@jzheaux

Thanks for your review. The gradle.properties file in the main branch is incorrect; I've updated it in the PR.

[jzheaux]

Thanks, @ngocnhan-tran1996, I've updated the gradle.properties file(s) separately.

[jzheaux]

Thanks, @ngocnhan-tran1996! This is now merged into main.