Bug#1052580: swi-prolog: FTBFS with OpenJDK 21 due to unsupported javac source/target level 7

[Vladimir Petko]

Dear Maintainers,

 Would it be possible to consider a merge request[1] that addresses this
issue?

Best Regards,
 Vladimir.

[1] https://salsa.debian.org/debian/swi-prolog/-/merge_requests/3