Fixed request URI at OAuth2 token request API.

Change-Id: I09d6ada87562a811ad8160b6b780319a526a3f41
diff --git a/pom.xml b/pom.xml
index 1eca2a8..0b16432 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
 		<jetty.version>11.0.24</jetty.version>
 		<flyway.version>10.6.0</flyway.version>
 		<log4j.version>2.22.1</log4j.version>
-		<krill.version>0.63.3</krill.version>
+		<krill.version>[0.63.3,)</krill.version>
 		<koral.version>[0.44,)</koral.version>
 	</properties>
 	<profiles>