Log Message:
shells/oh-my-posh: update to 21.16.0

v21.16.0
Features
 - block: allow leading and trailing diamond (6ee7437), closes #5121

v21.15.1
Bug Fixes
 - shell: prioritize $? for consistent status in Bash/Zsh (7f418d7)

v21.15.0
Bug Fixes
 - path: force linux style path for .Location (9f2c6d1), closes #5125
 - upgrade: disable upgrade feedback when notice is disabled (b809944), closes #5124

Features
 - path: allow displaying the cygwin style path (b6f5999), closes #5074