Update brave to 1.11.104

Summary:
Changelog:

• Upgraded Chromium to 84.0.4147.105.

Security:

• High CVE-2020-6537: Type Confusion in V8.
• High CVE-2020-6538: Inappropriate implementation in WebView.
• High CVE-2020-6532: Use after free in SCTP.
• High CVE-2020-6539: Use after free in CSS.
• High CVE-2020-6540: Heap buffer overflow in Skia.
• High CVE-2020-6541: Use after free in WebUSB.

Test Plan: - Browse a couple websites and make sure that all works as expected.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Tags: #security

Differential Revision: https://dev.getsol.us/D9401