Update dependency jsonschema to v4.20.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
jsonschema (changelog)	==4.19.2 -> ==4.20.0

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Release Notes

python-jsonschema/jsonschema (jsonschema)

v4.20.0

Compare Source

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• Properly consider items (and properties) to be evaluated by unevaluatedItems (resp. unevaluatedProperties) when behind a $dynamicRef as specified by the 2020 and 2019 specifications.
• jsonschema.exceptions.ErrorTree.__setitem__ is now deprecated.
  More broadly, in general users of jsonschema should never be mutating objects owned by the library.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9a17ed5) 77.73% compared to head (a7e94d9) 77.73%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1862   +/-   ##
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  Coverage   77.73%   77.73%           
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  Files         127      127           
  Lines        5268     5268           
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  Hits         4095     4095           
  Misses       1173     1173           

Flag	Coverage Δ
unittests	77.73% <ø> (ø)

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