Bump logback-classic from 1.1.0 to 1.2.0 in /logback-legacy-tests (#130)

Author: dependabot[bot]

logback-legacy-tests/pom.xml

@@ -38,7 +38,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.1.0</version>
+            <version>1.2.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>