fix: Use ParseEncoder when encoding data to ParseServer

[cbaker6]

Close #65

[codecov]

Codecov Report

Attention: Patch coverage is 54.54545% with 15 lines in your changes missing coverage. Please review.

Project coverage is 37.42%. Comparing base (63d0735) to head (35a6187).

Files	Patch %	Lines
...rces/ParseServerSwift/Extensions/Parse+Vapor.swift	51.61%	15 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #71      +/-   ##
==========================================
+ Coverage   36.83%   37.42%   +0.58%     
==========================================
  Files          11       11              
  Lines         752      783      +31     
==========================================
+ Hits          277      293      +16     
- Misses        475      490      +15     

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