Upgrade to Apache Cassandra 3.11.12.

Closes #1234

Author: mp911de

pom.xml

@@ -90,7 +90,7 @@
 		<build.cassandra.rpc_port>19160</build.cassandra.rpc_port>
 		<build.cassandra.ssl_storage_port>17001</build.cassandra.ssl_storage_port>
 		<build.cassandra.storage_port>17000</build.cassandra.storage_port>
-		<cassandra.version>3.11.5</cassandra.version>
+		<cassandra.version>3.11.12</cassandra.version>
 		<cassandra-driver.version>4.11.3</cassandra-driver.version>
 		<dist.id>spring-data-cassandra</dist.id>
 		<el.version>1.0</el.version>

setup-cassandra.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 if [ -z ${CASSANDRA_VERSION+x} ]; then
-    CASSANDRA_VERSION=3.0.7
+    CASSANDRA_VERSION=3.11.12
 fi
 
 if [[ ! -d download ]] ; then