Update brave to 0.63.55
- Fixed display of Ad Rewards earnings in settings panel.
- Removed expiration date from the rewards UI for grants received from ads.
- Upgraded Chromium to 74.0.3729.131.
Test Plan: - Checked that websites loaded OK and checked version
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D6241