fix(deps): update dependency io.kotest:kotest-runner-junit5 to v6

Author: renovate[bot]

gradle/testLibs.versions.toml

@@ -1,5 +1,5 @@
 [libraries]
 atrium-fluent-en-gb = "ch.tutteli.atrium:atrium-fluent-en_GB:0.18.0"
 junit-platform-launcher = "org.junit.platform:junit-platform-launcher:6.1.0"
-kotest-runner-junit5 = "io.kotest:kotest-runner-junit5:4.6.4"
+kotest-runner-junit5 = "io.kotest:kotest-runner-junit5:6.1.11"
 spek-runner-junit5 = "org.spekframework.spek2:spek-runner-junit5:2.0.19"