Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1

[juul-mobile-bot]

This PR contains the following updates:

Package	Type	Update	Change
org.jetbrains.kotlinx:kotlinx-serialization-json	dependencies	patch	1.8.0 -> 1.8.1

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Release Notes

Kotlin/kotlinx.serialization (org.jetbrains.kotlinx:kotlinx-serialization-json)

v1.8.1

==================

This release updates Kotlin version to 2.1.20, while also providing several important improvements
and bugfixes.

Improvements

• Implemented encoding null in key and value of a map in Protobuf (#​2910)
• Make type argument in JsonTransformingSerializer nullable (#​2911)
• Use SPDX identifier in POMs (#​2936) (thanks to Leon Linhart)
• Add watchosDeviceArm64 to Okio integration module (#​2920) (thanks to Daniel Santiago)
• Update kotlinx-io version to 0.6.0 (#​2933) (thanks to Piotr Krzemiński)

Bugfixes

• Fix incorrect enum coercion during deserialization from JsonElement (#​2962)
• Supply proper equals(), hashCode(), and toString() for SerialDescriptor() wrapper (#​2942)
• Do not encode empty packed collections in protobuf (#​2907)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.32%. Comparing base (2205fba) to head (743908c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #344   +/-   ##
=======================================
  Coverage   69.32%   69.32%           
=======================================
  Files           9        9           
  Lines         828      828           
  Branches      215      215           
=======================================
  Hits          574      574           
  Misses        168      168           
  Partials       86       86           

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