Bump org.jetbrains.kotlin:kotlin-test-junit5 from 1.8.20 to 1.8.21

Bumps [org.jetbrains.kotlin:kotlin-test-junit5](https://github.com/JetBrains/kotlin) from 1.8.20 to 1.8.21.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.8.20...v1.8.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle.kts

@@ -77,7 +77,7 @@ dependencies {
   implementation("com.google.re2j:re2j:1.7")
 //    implementation("com.github.fge:json-schema-validator:2.2.6")
 
-  testImplementation("org.jetbrains.kotlin:kotlin-test-junit5:1.8.20")
+  testImplementation("org.jetbrains.kotlin:kotlin-test-junit5:1.8.21")
   testImplementation("io.kotest:kotest-runner-junit5:5.6.1")
   testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.9.2")
 }