update SLF4J

build.gradle

@@ -11,7 +11,7 @@ buildscript {
 
 ext {
     libs = [
-            slf4jApi: 'org.slf4j:slf4j-api:1.7.13',
+            slf4jApi: 'org.slf4j:slf4j-api:1.7.16',
             jsonSmart: 'net.minidev:json-smart:2.2.1',
             jacksonDatabind: 'com.fasterxml.jackson.core:jackson-databind:2.6.3',
             gson: 'com.google.code.gson:gson:2.3.1',
@@ -20,7 +20,7 @@ ext {
             hamcrestCore: 'org.hamcrest:hamcrest-core:1.3',
             hamcrestLibrary: 'org.hamcrest:hamcrest-library:1.3',
 
-            test: ['org.slf4j:slf4j-simple:1.7.13', 'org.assertj:assertj-core:2.1.0', 'commons-io:commons-io:2.4','org.hamcrest:hamcrest-core:1.3', 'org.hamcrest:hamcrest-library:1.3', 'junit:junit:4.12']
+            test: ['org.slf4j:slf4j-simple:1.7.16', 'org.assertj:assertj-core:2.1.0', 'commons-io:commons-io:2.4','org.hamcrest:hamcrest-core:1.3', 'org.hamcrest:hamcrest-library:1.3', 'junit:junit:4.12']
     ]
     snapshotVersion = true
 }