Bug#1108557: bcel: FTBFS with default Java 25

[Vladimir Petko]

Dear Maintainers,

To resolve the issue, bcel needs to be upgraded to the version that
supports Java 25. This requires updating JUnit5 so that it could
provide a constant that allows to specify Java 25-specific tests, and
opentest4j-reporting, as the newer junit requires opentest4j-reporting
update.

I have raised MRs for opentest4j-reporting[1], junit5[2] and bcel[3] upgrades.

Best regards,
Vladimir.

[1]  https://salsa.debian.org/java-team/opentest4j-reporting/-/merge_requests/1
[2] https://salsa.debian.org/java-team/junit5/-/merge_requests/2
[3] https://salsa.debian.org/java-team/bcel/-/merge_requests/1