Linux rpm is not signed

[alexwykoff]

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  Users in the field cannot install the latest rpm due to it being unsigned.

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Linux

• Brave Version (revision SHA):
  0.18.14

• Steps to reproduce:

  1. Use a linux system like Fedora
  2. Attempt to install from apt repo

• Actual result:
  Brave doesn't install

• Expected result:
  Brave should install

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  Presumably

• Is this an issue in the currently released version?
  Yes

• Can this issue be consistently reproduced?
  Yes

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:

• Any related issues:

[evq]

This particular rpm has been re-uploaded correctly, and a PR is out to prevent it from happening again :)