Bump org.junit.jupiter:junit-jupiter-api in /server

Bumps [org.junit.jupiter:junit-jupiter-api](https://github.com/junit-team/junit5) from 5.11.0 to 5.11.3.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.0...r5.11.3)

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

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

server/build.gradle

@@ -38,7 +38,7 @@ dependencies {
   implementation 'org.slf4j:slf4j-simple:2.0.16'
 
   // JUnit Jupiter API for testing.
-  testImplementation 'org.junit.jupiter:junit-jupiter-api:5.11.0'
+  testImplementation 'org.junit.jupiter:junit-jupiter-api:5.11.3'
 
   // JUnit Jupiter Engine for testing.
   testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.11.0'