ESLint: enable 'arrow-body-style' rule

[IvanGoncharov]

No description provided.

[codecov]

Codecov Report

Merging #262 into master will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #262      +/-   ##
==========================================
- Coverage   99.51%   99.51%   -0.01%     
==========================================
  Files          19       19              
  Lines         621      617       -4     
  Branches       36       36              
==========================================
- Hits          618      614       -4     
  Misses          3        3              

Impacted Files	Coverage Δ
src/__tests__/starWarsSchema.js	100.00% <100.00%> (ø)
src/mutation/mutation.js	100.00% <100.00%> (ø)
src/node/__tests__/nodeasync.js	100.00% <100.00%> (ø)

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