Update dependency org.junit.jupiter:junit-jupiter-api to v6 (#162)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

settings.gradle.kts

@@ -33,7 +33,7 @@ dependencyResolutionManagement {
             library("csv", "com.opencsv", "opencsv").version("5.12.0")
 
             // testing dependencies
-            version("junit.version", "5.13.4")
+            version("junit.version", "6.0.1")
             library("junit.jupiter", "org.junit.jupiter", "junit-jupiter-api").versionRef("junit.version")
             library("assertj","org.assertj", "assertj-core").version("3.27.5")
             library("mockito","org.mockito", "mockito-core").version("5.20.0")