fix(deps): update junit-framework monorepo to v6

Author: renovate[bot]

ai-mocks-openai/samples/shadow/pom.xml

@@ -55,7 +55,7 @@
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
-            <version>5.13.4</version>
+            <version>6.0.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ dokka = "2.0.0"
 finchly = "0.1.1"
 google-genai = "1.20.0"
 google-adk = "0.3.0"
-junitJupiter = "5.13.4"
+junitJupiter = "6.0.0"
 kotest = "5.9.1"
 kotlin = "2.1.21"
 kotlinLogging = "7.0.13"