Update vis to 0.5
Update vis to 0.5 solves T7796
This version fixed i.a.: crashes/infinite bootloops when dealing with invalid/incomplete Unicode sequences, command prompt malfunction triggered by special cursor position, color support in ncurses 6.1. It also ships with a new default 256 color theme.
Test Plan: Installed and opened a file.
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D6218