Upgrade log4j (#405)

Author: ajsutton

build.gradle

@@ -398,6 +398,7 @@ applicationDefaultJvmArgs = [
   // We shutdown log4j ourselves, as otherwise his shutdown hook runs before our own and whatever
   // happens during shutdown is not logged.
   "-Dlog4j.shutdownHookEnabled=false",
+  "-Dlog4j2.formatMsgNoLookups=true",
   // netty specific module warnings
   "-Dio.netty.tryReflectionSetAccessible=true",
   "--add-exports",

gradle/versions.gradle

@@ -41,9 +41,9 @@ dependencyManagement {
 
     dependency 'javax.activation:activation:1.1.1'
 
-    dependency 'org.apache.logging.log4j:log4j-api:2.13.0'
-    dependency 'org.apache.logging.log4j:log4j-core:2.13.0'
-    dependency 'org.apache.logging.log4j:log4j-slf4j-impl:2.13.0'
+    dependency 'org.apache.logging.log4j:log4j-api:2.15.0'
+    dependency 'org.apache.logging.log4j:log4j-core:2.15.0'
+    dependency 'org.apache.logging.log4j:log4j-slf4j-impl:2.15.0'
 
     dependencySet(group: 'org.apache.tuweni', version: '1.1.0') {
       entry 'tuweni-net'