Bump log4j to 2.17.1 for CVE-2021-44228 & CVE-2021-45046 & CVE-2021-45105 & CVE-2021-44832 (#356)

* Bump log4j to 2.15.0 for CVE-2021-44228
* Bump log4j to 2.16.0 for CVE-2021-45046
* Bump log4j to 2.17.0 for CVE-2021-45105
* Bump log4j to 2.17.0 for CVE-2021-44832

Author: zigarn

build.gradle

@@ -31,7 +31,7 @@ allprojects {
 
   dependencies {
     compile 'net.sourceforge.argparse4j:argparse4j:0.5.0'
-    compile 'org.apache.logging.log4j:log4j-slf4j-impl:2.13.0'
+    compile 'org.apache.logging.log4j:log4j-slf4j-impl:2.17.1'
     compile 'org.apache.avro:avro:1.4.1'
     compile 'org.json:json:20140107'
     compile 'org.jolokia:jolokia-jvm:1.6.2'