Update plugin org.jetbrains.kotlinx.kover to v0.5.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlinx.kover	0.5.0 -> 0.5.1

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Release Notes

Kotlin/kotlinx-kover

v0.5.1

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Features

• Added Gradle configuration cache support (#​142)
• Implemented the use of the full path to the project for the exclusion (#​151)
• Supported IntelliJ Verifier
• Upgraded default and minimal IntelliJ Coverage Engine version to 1.0.668

IntelliJ Agent

• Fixed coverage counter for $DefaultImpls (#​149)

Internal features

• Added functional tests on verification
• Implemented simple JSON parser and serializer

Requirements

• Upgraded minimal supported Gradle version to 6.6

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Configuration

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