Bug#1053061: mecab: FTBFS with default Java 21

[Kentaro HAYASHI]

FYI:

It seems that this FTBFS issue was already fixed in master, but not
released yet.

  
https://salsa.debian.org/nlp-ja-team/mecab/-/commit/0c8c0d1b3730758ef0ea98927e25c12596e39cf9

Regards,