chore(deps): update java testing packages to v6 (#1955)

Author: ggrossetie

server/pom.xml

@@ -17,7 +17,7 @@
     <logback.version>1.5.21</logback.version>
     <vertx.version>4.5.22</vertx.version>
     <opentelemetry.version>1.56.0</opentelemetry.version>
-    <junit.jupiter.version>5.14.1</junit.jupiter.version>
+    <junit.jupiter.version>6.0.1</junit.jupiter.version>
     <assertj-core.version>3.27.6</assertj-core.version>
     <mockito-core.version>5.20.0</mockito-core.version>
     <slf4j-api.version>2.0.17</slf4j-api.version>