Revert java version to 11

Issue-ID: DCAEGEN2-2219
Signed-off-by: Piotr Marcinkiewicz <piotr.marcinkiewicz@nokia.com>
Change-Id: I82b8fa0ead6e9576c8953739e6563488d4ac9764
diff --git a/pom.xml b/pom.xml
index 47f1fcc..5de61f9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
   </licenses>
 
   <properties>
-    <java.version>8</java.version>
+    <java.version>11</java.version>
     <sdk.version>1.1.6</sdk.version>
     <apache.httpcomponents.version>4.1.4</apache.httpcomponents.version>
     <apache.commons.version>3.6</apache.commons.version>