fix: remove "type": "module"

[KATT]

https://github.com/trpc/trpc/actions/runs/6502317199/job/17661145369?pr=4911

[github-actions]

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[codecov]

Codecov Report

Merging #62 (84fad37) into main (901d7d5) will not change coverage.
Report is 2 commits behind head on main.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #62   +/-   ##
=======================================
  Coverage   97.95%   97.95%           
=======================================
  Files          30       30           
  Lines        1469     1469           
  Branches      171      171           
=======================================
  Hits         1439     1439           
  Misses         28       28           
  Partials        2        2           

Flag	Coverage Δ
unit	97.95% <ø> (ø)

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