Make code compiles on JDK 23

[He-Pin]

The current code can't compile on JDK 23.

[pjfanning]

see #1534

[pjfanning]

My view is that we should disable the deprecated code checks when building with Java 23+ (ie not have scalac flags like -Werror and flags like that - that cause the build to fail if we use deprecated code). We can still use these scalac flags for Java 21 and below.

[He-Pin]

@pjfanning I think it works