extend fuzzing with different parse options

[tyler92]

Include different parse_options for fuzzing for better coverage

[cppalliance-bot]

An automated preview of the documentation is available at https://1038.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1038/pullrequest.html

[cppalliance-bot]

An automated preview of the documentation is available at https://1038.jsondocs.prtest.cppalliance.org/libs/json/doc/html/index.html

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.40%. Comparing base (72175b0) to head (824cc59).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1038   +/-   ##
========================================
  Coverage    93.40%   93.40%           
========================================
  Files           87       87           
  Lines         8622     8622           
========================================
  Hits          8053     8053           
  Misses         569      569           

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[cppalliance-bot]

Benchmark test results. More info at https://benchmark.cppalliance.org/jsonbenchmarks-pullrequests/1038/pullrequest.html

[grisumbras]

Good idea. Thank you for your contribution.