Update dependencies and AVA imports

[nachogarcia]

I've updated the dependencies and fixed the test imports.

I trust that if the tests pass this should keep working, but I haven't got deep into it.
Plugging it into an existing project before merging would be great.

Maybe a bot for dependency upgrade in the repository could be nice.

[codecov]

Codecov Report

Merging #81 (b8f3db1) into master (4912d4c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #81   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines           70        76    +6     
  Branches        13        20    +7     
=========================================
+ Hits            70        76    +6     

Impacted Files	Coverage Δ
src/cacheAdapterEnhancer.ts	100.00% <0.00%> (ø)
src/retryAdapterEnhancer.ts	100.00% <0.00%> (ø)
src/utils/buildSortedURL.ts	100.00% <0.00%> (ø)
src/throttleAdapterEnhancer.ts	100.00% <0.00%> (ø)

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[kuitos]

Thanks for your nice work~