Repeated crashes on 1.3.113 on Mac and Ubuntu

[Mattches]

@aphoid @srp,
We have a newer test build (v1.3.115) for users to install that should stop the crashes – can you try and install this new build and see if the crashes stop?

@kamil

For those of you who are still crashing, can you please try the following build? This will disable sync temporarily until we fix the crashes and stabilize the feature:

• Win x64 - https://github.com/brave/brave-browser/releases/download/v1.3.115/BraveBrowserStandaloneSetup.exe
• Win x86 - https://github.com/brave/brave-browser/releases/download/v1.3.115/BraveBrowserStandaloneSetup32.exe
• macOS - https://github.com/brave/brave-browser/releases/download/v1.3.115/Brave-Browser.dmg
• Linux - https://github.com/brave/brave-browser/releases/download/v1.3.115/brave-browser_1.3.115_amd64.deb