[BAHIR-194] bump kudu version to 1.8.0

Closes 44
diff --git a/flink-connector-kudu/pom.xml b/flink-connector-kudu/pom.xml
index 61ab4a6..5540fc1 100644
--- a/flink-connector-kudu/pom.xml
+++ b/flink-connector-kudu/pom.xml
@@ -30,7 +30,7 @@
   <packaging>jar</packaging>
 
   <properties>
-    <kudu.version>1.7.1</kudu.version>
+    <kudu.version>1.8.0</kudu.version>
 
     <junit.groups>!DockerTest</junit.groups>
   </properties>