fix: Send JSON response instead of plain text

[tushar5526]

Closes #59
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Changes

Send JSONReponse instead of plain text.

How did you test this code?

make test

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[codecov-commenter]

Codecov Report

Patch coverage: 50.00% and project coverage change: +0.04% 🎉

Comparison is base (55a9ef7) 95.48% compared to head (0103429) 95.52%.
Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2739      +/-   ##
==========================================
+ Coverage   95.48%   95.52%   +0.04%     
==========================================
  Files         994      993       -1     
  Lines       27939    28007      +68     
==========================================
+ Hits        26677    26754      +77     
+ Misses       1262     1253       -9     

Files Changed	Coverage Δ
api/app/settings/common.py	87.95% <ø> (ø)
api/users/views.py	91.21% <50.00%> (ø)

... and 16 files with indirect coverage changes

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[matthewelwell]

@tushar5526 can you fix the linting errors here?

[tushar5526]

@tushar5526 can you fix the linting errors here?

Done!