Fix "Could not determine java version from '11.0.2'."

https://docs.gradle.org/5.0/release-notes.html#java-11-runtime-support

Author: wtanaka

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Fri Mar 04 11:32:27 CST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.5-bin.zip