Update dependency koa-logger to v4

[renovate]

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This PR contains the following updates:

Package	Change	Age	Confidence
koa-logger	3.2.1 -> 4.0.0

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Release Notes

koajs/logger (koa-logger)

v4.0.0

Compare Source

• Merge pull request #​89 from koajs/revive-repo b2e373f
• chore: update readme me file 6c1d655
• feat: use on-finished for better last shot 2650092
• feat: revive the repo 21ad966
• Fix streaming body sizes not being logged (#​86) 4980385
• docs: fix readme f8edfa0
• refactor: drop support of node < 10 34e16c3
  ============
• Support Koa v3.
• Migrate from Travis CI to GitHub Actions.
• Migrate from Chai + Mocha to Node Native Testing (test + assert).
• Migrate all code from call-backs to async await (including tests + example).
• Bump all dependencies.
• Support all request-received versions
• Enhance the last shot with on-finished module
• Support Node.js 18+
  ============

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.17%. Comparing base (ed6b8b2) to head (db131c7).
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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #157   +/-   ##
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  Coverage   91.17%   91.17%           
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  Files           8        8           
  Lines         238      238           
  Branches       62       62           
=======================================
  Hits          217      217           
  Misses         20       20           
  Partials        1        1           

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