Update dependencies to newest versions

Author: Suszyński Krzysztof

pom.xml

@@ -132,7 +132,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
-            <version>1.7.19</version>
+            <version>1.7.20</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -382,7 +382,7 @@
                             <dependency>
                                 <groupId>org.codehaus.groovy</groupId>
                                 <artifactId>groovy-all</artifactId>
-                                <version>2.4.5</version>
+                                <version>2.4.6</version>
                             </dependency>
                         </dependencies>
                         <configuration>