[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3713: The README points at travis-ci and coveralls, neither of which the project uses anymore

[Tahoe-LAFS]

#3713: The README points at travis-ci and coveralls, neither of which the project
uses anymore
---------------------+---------------------------
 Reporter:  exarkun  |          Owner:
     Type:  defect   |         Status:  new
 Priority:  normal   |      Milestone:  undecided
Component:  unknown  |        Version:  n/a
 Keywords:           |  Launchpad Bug:
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 These should both be removed.

 Possibly codecov and GitHub Actions should also be added in their place.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3713>
Tahoe-LAFS <https://Tahoe-LAFS.org>
secure decentralized storage