[rollbar-logback][build][SDK-315] Update dependency (#310)

* build(logback): Update dependency

set versions without vulnerabilities

Author: christianbuon

rollbar-logback/build.gradle

@@ -1,6 +1,6 @@
 dependencies {
     api project(':rollbar-java')
 
-    api group: 'ch.qos.logback', name: 'logback-classic', version: '1.2.3'
-    api group: 'ch.qos.logback', name: 'logback-core', version: '1.2.3'
-}
+    api group: 'ch.qos.logback', name: 'logback-classic', version: '1.3.14'
+    api group: 'ch.qos.logback', name: 'logback-core', version: '1.3.14'
+}