Bump org.junit.jupiter:junit-jupiter-engine from 5.13.4 to 6.0.3 (#857)

Bumps [org.junit.jupiter:junit-jupiter-engine](https://github.com/junit-team/junit-framework) from 5.13.4 to 6.0.3.
- [Release notes](https://github.com/junit-team/junit-framework/releases)
- [Commits](junit-team/junit-framework@r5.13.4...r6.0.3)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

client/build.gradle

@@ -42,8 +42,8 @@ dependencies {
     }
     testImplementation('commons-io:commons-io:2.21.0')
     testImplementation("org.mockito:mockito-core:5.+")
-    testImplementation('org.junit.jupiter:junit-jupiter-engine:5.13.4')
-    testImplementation('org.junit.jupiter:junit-jupiter-params:5.13.4')
+    testImplementation('org.junit.jupiter:junit-jupiter-engine:6.0.3')
+    testImplementation('org.junit.jupiter:junit-jupiter-params:6.0.3')
     testImplementation('org.apache.james:apache-mime4j:0.8.13') {
         exclude module: 'junit'
     }

server/manifestmergetool/build.gradle

@@ -85,7 +85,7 @@ dependencies {
     testImplementation(platform('org.junit:junit-bom:6.0.1'))
     testRuntimeOnly('org.junit.platform:junit-platform-launcher')
     testImplementation('commons-io:commons-io:2.21.0')
-    testImplementation('org.junit.jupiter:junit-jupiter-engine:5.13.4')
+    testImplementation('org.junit.jupiter:junit-jupiter-engine:6.0.3')
 }
 
 allprojects {