circleci: updates for reviewdog

[josephbergevin]

No description provided.

[codecov]

Codecov Report

Merging #43 into master will increase coverage by 2.53%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #43      +/-   ##
==========================================
+ Coverage      40%   42.53%   +2.53%     
==========================================
  Files           8       10       +2     
  Lines         520      656     +136     
==========================================
+ Hits          208      279      +71     
- Misses        284      341      +57     
- Partials       28       36       +8

Impacted Files	Coverage Δ
fetchermock/client.go	44.31% <0%> (ø)
fetchermock/expected_request.go	66.66% <0%> (ø)

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