Bump cassandra-driver-core from 3.6.0 to 3.7.1 in /modules/cassandra

Bumps [cassandra-driver-core](https://github.com/datastax/java-driver) from 3.6.0 to 3.7.1.
- [Release notes](https://github.com/datastax/java-driver/releases)
- [Commits](apache/cassandra-java-driver@3.6.0...3.7.1)

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

modules/cassandra/build.gradle

@@ -2,5 +2,5 @@ description = "TestContainers :: Cassandra"
 
 dependencies {
     compile project(":database-commons")
-    compile "com.datastax.cassandra:cassandra-driver-core:3.6.0"
+    compile "com.datastax.cassandra:cassandra-driver-core:3.7.1"
 }