Add middy-env to 3rd party middleware list

[chrisandrews7]

Adding middy-env to 3rd party middleware list

[codecov]

Codecov Report

Merging #352 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #352   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          20     20           
  Lines         543    543           
  Branches      111    111           
=====================================
  Hits          543    543

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[codecov]

Codecov Report

Merging #352 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #352   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          20     20           
  Lines         545    543    -2     
  Branches      112    111    -1     
=====================================
- Hits          545    543    -2

Impacted Files	Coverage Δ
src/middlewares/warmup.js	100% <0%> (ø)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[lmammino]

Thanks @chrisandrews7, i'll try to get this merged in the next few hours :)