editors/jucipp: Update to 1.6.0

From ChangeLog: https://gitlab.com/cppit/jucipp/-/releases/v1.6.0

New features:

• Added Go To Method for file types supported by (Universal) ctags
• Added Find Pattern that uses grep to find given patterns
• Added markdown parsing for tooltips

Cleanups, bugfixes and other improvements:

• Replaced some deprecated gtkmm functions
• Corrected bold markings for ctags results
• Made improvements to finding C/C++ system header paths
• Removed deprecated --harmony flag when running standalone JavaScript files
• Prettier is now used to style format markdown and YAML files
• Various fixes for FreeBSD
• Structured bindings in C++ are now supported
• Improved C/C++ tooltips, for instance showing correct const qualifier
• Language client: fixed didChange notification when test document sync is full
• Fixed crash on MacOS due to buggy boost::filesystem::canonical
• Symbols and emojis no longer considered word characters when spellchecking

PR: 246347
Submitted by: info@babaei.net (maintainer)