Bump logback-classic from 1.0.13 to 1.2.0 (#56)

Author: dependabot[bot]

pom.xml

@@ -254,7 +254,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.0.13</version>
+            <version>1.2.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>