Updating release version in pom.xml (#520)

- Version updated to 2.0.6

Author: rdsharma26

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.amazon.deequ</groupId>
     <artifactId>deequ</artifactId>
-    <version>2.0.5-spark-3.4</version>
+    <version>2.0.6-spark-3.4</version>
 
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>