Bump version to 2.5.2

Author: sink772

README.md

@@ -22,15 +22,15 @@ Download [the latest JAR](https://search.maven.org/search?q=g:foundation.icon%20
 <dependency>
     <groupId>foundation.icon</groupId>
     <artifactId>icon-sdk</artifactId>
-    <version>2.5.1</version>
+    <version>2.5.2</version>
 </dependency>
 ```
 
 or Gradle:
 
 ```groovy
 dependencies {
-    implementation 'foundation.icon:icon-sdk:2.5.1'
+    implementation 'foundation.icon:icon-sdk:2.5.2'
 }
 ```
 

gradle.properties

@@ -15,7 +15,7 @@
 #
 
 GROUP=foundation.icon
-VERSION_NAME=2.5.1
+VERSION_NAME=2.5.2
 
 BINTRAY_USER_ORG=icon
 BINTRAY_REPO=icon-sdk