Bump org.mongodb:mongodb-driver-sync in /modules/mongodb

Bumps [org.mongodb:mongodb-driver-sync](https://github.com/mongodb/mongo-java-driver) from 5.1.2 to 5.1.4.
- [Release notes](https://github.com/mongodb/mongo-java-driver/releases)
- [Commits](mongodb/mongo-java-driver@r5.1.2...r5.1.4)

---
updated-dependencies:
- dependency-name: org.mongodb:mongodb-driver-sync
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

modules/mongodb/build.gradle

@@ -3,6 +3,6 @@ description = "Testcontainers :: MongoDB"
 dependencies {
     api project(':testcontainers')
 
-    testImplementation("org.mongodb:mongodb-driver-sync:5.1.2")
+    testImplementation("org.mongodb:mongodb-driver-sync:5.1.4")
     testImplementation 'org.assertj:assertj-core:3.26.3'
 }