Bump org.wiremock:wiremock from 3.5.4 to 3.9.1

Bumps [org.wiremock:wiremock](https://github.com/wiremock/wiremock) from 3.5.4 to 3.9.1.
- [Release notes](https://github.com/wiremock/wiremock/releases)
- [Commits](wiremock/wiremock@3.5.4...3.9.1)

---
updated-dependencies:
- dependency-name: org.wiremock:wiremock
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

client/build.gradle

@@ -18,7 +18,7 @@ dependencies {
     implementation "org.openapitools:jackson-databind-nullable:0.2.6"
     implementation "io.mikael:urlbuilder:2.0.9"
 
-    testImplementation "org.wiremock:wiremock:3.5.4"
+    testImplementation "org.wiremock:wiremock:3.9.1"
     testImplementation "org.junit.jupiter:junit-jupiter-api:5.10.2"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.10.2"
 }