bumped to v2 of slf4j

Signed-off-by: Lars Heinemann <lhein.smx@gmail.com>

Author: lhein

pom.xml

@@ -245,7 +245,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-slf4j-impl</artifactId>
+			<artifactId>log4j-slf4j2-impl</artifactId>
 			<version>${log4j-slf4j.version}</version>
 		</dependency>
 		<dependency>