[tor-bugs] #31313 [Applications/GetTor]: Don't rely on RecommendedTBBVersions to create download links

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#31313: Don't rely on RecommendedTBBVersions to create download links
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     Reporter:  phw                  |      Owner:  (none)
         Type:  enhancement          |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/GetTor  |    Version:
     Severity:  Normal               |   Keywords:
Actual Points:                       |  Parent ID:
       Points:  0.5                  |   Reviewer:
      Sponsor:                       |
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 Over at #31307, we were dealing with a broken GetTor because it made
 assumptions on the list length available at
 https://www.torproject.org/projects/torbrowser/RecommendedTBBVersions/.
 See [https://trac.torproject.org/projects/tor/ticket/31307#comment:2 this
 comment] for more details.

 While our emergency fix worked, boklm mentions on IRC that
 RecommendedTBBVersions is not a good way to learn about the current Tor
 Browser version:
 {{{
  20:46  boklm│ RecommendedTBBVersions is not a good way to get the current
 Tor Browser version
  20:47  boklm│
 https://aus1.torproject.org/torbrowser/update_3/release/downloads.json is
 better
  20:48  boklm│ for example with: wget -q -O -
 https://aus1.torproject.org/torbrowser/update_3/release/downloads.json |
 jq -r .version
 }}}

 Let's use this JSON file instead, and make GetTor more robust.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31313>
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