Merge pull request #815 from apache/update/logbck-version

Update logback version in application logback toolkit

apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml

@@ -33,7 +33,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.1.7</version>
+            <version>1.2.3</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>