Update dependency JsonSubTypes to 2.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
JsonSubTypes	2.0.1 → 2.1.0

Test plan: CI should pass with updated dependencies. No review required: this is an automated dependency update PR.

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Release Notes

manuc66/JsonSubTypes (JsonSubTypes)

v2.1.0

Added

• Make JsonSubtypesConverter and JsonSubtypesByDiscriminatorValueConverter public and subclassable: custom subtype converters can now be built with a custom discriminator mapping and control over discriminator serialization, instead of being limited to the fluent builder. #​138

Fixed

• Deserializing dates now matches stock Newtonsoft deserialization #​166 #​167

Changed

• Bump Newtonsoft.Json dependency to 13.0.4
• Deterministic builds, Source Link and .snupkg symbol packages

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Test Results

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit 37e7197. ± Comparison against base commit 9dd188e.