fix(deps): update kotest to v6 (major)

[rb-org-bot[bot]]

This PR contains the following updates:

Package	Change	Age	Confidence
io.kotest:kotest-runner-junit5-jvm	5.9.1 -> 6.0.0
io.kotest:kotest-property-jvm	5.9.1 -> 6.0.0
io.kotest:kotest-extensions	5.9.1 -> 6.0.0
io.kotest:kotest-common	5.9.1 -> 6.0.0
io.kotest:kotest-assertions-shared	5.9.1 -> 6.0.0
io.kotest:kotest-assertions-core-jvm	5.9.1 -> 6.0.0

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