Run coverage w/o orjson

[gadomski]

Related Issue(s):

• Closes Test both with and without orjson #475

Description:

Run coverage with and without orjson, accumulating results with --append. cc @l0b0

PR Checklist:

• Code is formatted (run pre-commit run --all-files)
• Tests pass (run scripts/test)
• Documentation has been updated to reflect changes, if applicable
• This PR maintains or improves overall codebase code coverage.
• Changes are added to the CHANGELOG. See the docs for information about adding to the changelog.

[codecov-commenter]

Codecov Report

Base: 94.37% // Head: 94.42% // Increases project coverage by +0.04% 🎉

Coverage data is based on head (0baa3d7) compared to base (d28bd43).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #914      +/-   ##
==========================================
+ Coverage   94.37%   94.42%   +0.04%     
==========================================
  Files          83       83              
  Lines       12016    12016              
  Branches     1136     1136              
==========================================
+ Hits        11340    11346       +6     
+ Misses        496      492       -4     
+ Partials      180      178       -2     

Impacted Files	Coverage Δ
pystac/stac_io.py	93.04% <0.00%> (+5.21%)	⬆️

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[pjhartzell]

LGTM.