Bump Kafka Version to fix lz4 bug (#456)

Author: conker84

pom.xml

@@ -36,7 +36,7 @@
         <kotlin.version>1.3.72</kotlin.version>
         <kotlin.coroutines.version>1.3.9</kotlin.coroutines.version>
         <neo4j.version>3.5.21</neo4j.version>
-        <kafka.version>2.3.0</kafka.version>
+        <kafka.version>2.4.0</kafka.version>
         <jackson.version>2.9.7</jackson.version>
         <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
         <neo4j.java.driver.version>1.7.5</neo4j.java.driver.version>