Update finance/skrooge to 2.5.0

Update skrooge to 2.5.0 [1] which brings in support for
encrypted databases via databases/sqlcipher.

This switches the port from using kdelibs4 to using
KDE Frameworks 5 (KDE4 is no longer supported, and last
released in june 2015).

[1] https://skrooge.org/skrooge_2.5.0

Reviewed by: rakuco
Approved by: rakuco (mentor)
Differential Revision: https://reviews.freebsd.org/D8810