Update dependency koa-body to v4.2.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
koa-body	dependencies	minor	4.1.1 -> 4.2.0

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Release Notes

dlau/koa-body

v4.2.0

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• support all text content types (#​179)
• adds TypeScript integration testing (#​177)
• removes testing against EOL Node.js verions

v4.1.3

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Reverted changes introduced in 4.1.2. Now 4.1.3 is effectively the same as 4.1.1.

v4.1.2

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Bad TypeScript definition file change (#​173). Do not use this version.

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@6c1afc7). Click here to learn what that means.
The diff coverage is n/a.

[codecov-commenter]

Codecov Report

Merging #392 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #392   +/-   ##
======================================
  Coverage    8.36%   8.36%           
======================================
  Files         145     145           
  Lines        2140    2140           
  Branches      183     183           
======================================
  Hits          179     179           
  Misses       1805    1805           
  Partials      156     156           

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[codecov-io]

Codecov Report

Merging #392 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #392   +/-   ##
======================================
  Coverage    7.82%   7.82%           
======================================
  Files         153     153           
  Lines        2289    2289           
  Branches      195     195           
======================================
  Hits          179     179           
  Misses       1942    1942           
  Partials      168     168           

---

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