Bump org.junit.jupiter:junit-jupiter in the test-dependencies group

Bumps the test-dependencies group with 1 update: [org.junit.jupiter:junit-jupiter](https://github.com/junit-team/junit-framework).


Updates `org.junit.jupiter:junit-jupiter` from 5.14.3 to 6.0.3
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.14.3...r6.0.3)

---
updated-dependencies:
- dependency-name: org.junit.jupiter:junit-jupiter
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: test-dependencies
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 bakdata-plugins = "2.2.0"
 okhttp = "5.3.2"
-junit = "5.14.3"
+junit = "6.0.3"
 
 [libraries]
 jsoup = { group = "org.jsoup", name = "jsoup", version = "1.22.1" }