Increased ava unit test timeout

[kiancross]

Closes #208.

[codecov]

Codecov Report

Merging #209 (cfa1835) into master (0ac93d4) will increase coverage by 1.68%.
The diff coverage is 87.87%.

@@            Coverage Diff             @@
##           master     #209      +/-   ##
==========================================
+ Coverage   60.30%   61.98%   +1.68%     
==========================================
  Files         108      108              
  Lines        1388     1397       +9     
  Branches      175      179       +4     
==========================================
+ Hits          837      866      +29     
+ Misses        551      531      -20     

Flag	Coverage Δ
backend-core	94.44% <100.00%> (+0.15%)	⬆️
backend-federation-client	84.46% <ø> (ø)
backend-federation-server	68.96% <ø> (ø)
backend-internal-server	63.47% <ø> (ø)
backend-ml	93.02% <ø> (ø)
frontend	23.76% <80.00%> (+5.15%)	⬆️
shared	100.00% <ø> (ø)

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