Upgrade Java syntax support

[ice1000]

Hi, thanks for making bat!

I'm a Java 18 user, and Java now has keywords like sealed, record which are not highlighted by bat. I saw that sublimehq/Packages@e754ec4 already supports these keywords. Is it feasible for bat to upgrade the syntax?

This is what bat shows for me. It would be cool if it can support all the new keywords.

[ice1000]

Please beware that bat has very high impact in the community. The lack of latest Java feature support also affects git-delta -- another cool project.

[keith-hall]

Unfortunately it is currently not feasible, see #2358 (comment). Trust me, we are just as keen as you are to be able to get the latest/best language support possible!

[ice1000]

That's heartbreaking..