Config: Default to Hackney again

Gun is still acting up.
10 jobs for deactivate-gun-again in 20 minutes and 14 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #140429
build

00:06:51

 
  Test
passed #140434
analysis

00:02:59

passed #140431
federated-testing

00:05:47

passed #140433
lint

00:00:20

passed #140430
unit-testing

00:07:29

88.1%
passed #140438
unit-testing-rum

00:06:25

failed #140432
unit-testing-rum

00:06:53

 
  Benchmark
manual #140435
allowed to fail manual
benchmark
 
  Deploy
manual #140436
allowed to fail manual
review_app
manual #140437
allowed to fail manual
stop_review_app