sysutils/conky: update to 1.22.0

ChangeLog: https://github.com/brndnmtthws/conky/releases/tag/v1.22.0

Features

 * Allow to override build date with SOURCE_DATE_EPOCH
 * Add support for power_now

Bug fixes

 * NetBSD: Fix CPU usage and top info.
 * Fix out_to_wayland giving nothing
 * Revert "Use private mapping from provided shm_pool buffer"
 * Fix non-text content using own_window_argb_value
 * NetBSD: Fix meminfo.
 * wayland: fix clean_text bug

Miscellaneous

 * Bump minor version
 * Simplify adding new wayland protocols
 * Move color parse error message out of hex parser
 * Add blame ignore file
 * Update Catch2 from 2.13.9 to 3.7.1
 * Implement -U for NetBSD.