fix: add EOL at the end of a JSON file

[hasundue]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 88.23529% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 87.29%. Comparing base (e4cbc03) to head (92515f9).

Files	Patch %	Lines
lib/file.ts	77.77%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #137      +/-   ##
==========================================
+ Coverage   87.24%   87.29%   +0.04%     
==========================================
  Files          18       18              
  Lines         886      897      +11     
  Branches      136      137       +1     
==========================================
+ Hits          773      783      +10     
- Misses        113      114       +1     

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