fix(deps): Update junit to v6

Author: cq-bot

lib/build.gradle

@@ -46,9 +46,9 @@ dependencies {
 
     testImplementation 'io.grpc:grpc-testing:1.75.0'
     testImplementation 'io.grpc:grpc-inprocess:1.75.0'
-    testImplementation platform('org.junit:junit-bom:5.11.4')
-    testImplementation 'org.junit.jupiter:junit-jupiter:5.11.4'
-    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.11.4'
+    testImplementation platform('org.junit:junit-bom:6.0.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter:6.0.0'
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:6.0.0'
     testImplementation 'org.mockito:mockito-core:5.20.0'
     testImplementation 'org.mockito:mockito-junit-jupiter:5.15.2'
     testImplementation 'nl.jqno.equalsverifier:equalsverifier:4.1.1'