update navi to v2.14.0

Summary:
update navi to latest upstream release.

Changelog:

• Add keybinding for editing cheatsheet entry
• Improve argument parsing
• Add UX workaround for nested variables
• Convert - to _ for env vars
• Remove deprecated flags

Test Plan:

• Downloaad/manage multiple cheatsheet repos
• Use cheatsheets for git and eopkg
• Run commands via cheatsheets (git init, git add, eopkg up, etc)

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl, sethfl

Differential Revision: https://dev.getsol.us/D10497