Update MongoDB dependencies from classic to modern.

<dependency>
  <groupId>org.mongodb</groupId>
  <artifactId>mongo-java-driver</artifactId>
  <version>${mongodb.version}</version>
</dependency>

<dependency>
  <groupId>org.mongodb</groupId>
  <artifactId>mongodb-driver</artifactId>
  <version>${mongodb.version}</version>
</dependency>
<dependency>
  <groupId>org.mongodb</groupId>
  <artifactId>bson</artifactId>
  <version>${mongodb.version}</version>
</dependency>