Bump logback-classic from 1.2.10 to 1.3.5 (#611)

Author: PatrickGotthard

pom.xml

@@ -296,7 +296,7 @@
             <dependency>
                 <groupId>ch.qos.logback</groupId>
                 <artifactId>logback-classic</artifactId>
-                <version>1.2.10</version>
+                <version>1.3.5</version>
             </dependency>
             <!-- JUnit -->
             <dependency>