[tor-bugs] #31079 [Applications/Tor Browser]: Update Mozilla gpg key

[Tor Bug Tracker & Wiki]

#31079: Update Mozilla gpg key
-------------------------------------+-------------------------------------
     Reporter:  boklm                |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Immediate            |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-rbm,
     Severity:  Normal               |  TorBrowserTeam201907
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 The build of `tbb-8.5.4-build1` fails with the error:
 {{{
 Error: File SHA512SUMS-60.8.0esr-build1 is not signed with a valid key
 }}}

 We need to update the key in `keyring/firefox.gpg` to add the new subkey.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31079>
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