sysutils/conky{-awesome}: update to 0.120.2

ChangeLog: https://github.com/brndnmtthws/conky/releases/tag/v1.20.2

Features

 * Separate cairo-xlib.h Lua bindings from cairo.h
 * Cleanup build flags, global namespace and includes
 * Use perfect hash (gperf) for parsing color names
 * set_struts improvements

Bug fixes

 * Fix imlib_cache_size_setting::lua_setter

Miscellaneous

 * Bump version
 * Annoyingly, the artifacts go into a subdir
 * Always run Nix & AppImage builds on PRs
 * Track more context labels
 * Fix matrix URL
 * Revert "Fix matrix URL"
 * Fix web components and pages (UI)