java/sqlitejdbc: little cleanup

• bump portrevision so new packages with the deprecation annotation and expiration date are build
• be a bit more pedantic about the 3 months expiration date so we are sure the next quarterly branch contains this package
• mark as conflicting with the new port, they install the same .so library file

PR: 293491
Approved-by: maintainer timeout (Lapo Luchini)