build(deps): bump junit-jupiter from 5.11.4 to 5.12.1

Bumps `junit-jupiter` from 5.11.4 to 5.12.1.

Updates `org.junit.jupiter:junit-jupiter-api` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

Updates `org.junit.jupiter:junit-jupiter-engine` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

---
updated-dependencies:
- dependency-name: org.junit.jupiter:junit-jupiter-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.junit.jupiter:junit-jupiter-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -18,7 +18,7 @@ pmd = "6.55.0"
 jacoco = "0.8.7"
 # Testing
 mockito = "5.16.0"
-junit-jupiter = "5.11.4"
+junit-jupiter = "5.12.1"
 
 [libraries]
 openapi-tools-jacksonDatabindNullable = { group = "org.openapitools", name = "jackson-databind-nullable", version.ref = "openapi-tools" }