Fix missing dependencies

Author: alumik

pom.xml

@@ -30,6 +30,11 @@
             <artifactId>snakeyaml</artifactId>
             <version>1.27</version>
         </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.2.3</version>
+        </dependency>
         <dependency>
             <groupId>guru.nidi</groupId>
             <artifactId>graphviz-java</artifactId>