Upgrade commons-lang to commons-lang3

Change-Id: I32ef4ee9f6a40ba0bb4a0cfcee2a97f6a405a7e1
diff --git a/pom.xml b/pom.xml
index 0cc1513..8cc045d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -206,12 +206,13 @@
 			annotation <dependency> <groupId>KorapAnnotationProcessor</groupId> <artifactId>KorapAnnotationProcessor</artifactId> 
 			<version>0.0.1-SNAPSHOT</version> <scope>compile</scope> </dependency> -->
 
-		<!-- Some language extensions like StringUtil, IOUtils ... -->
-		<dependency>
-			<groupId>commons-lang</groupId>
-			<artifactId>commons-lang</artifactId>
-			<version>2.6</version>
-		</dependency>
+                <!-- Some language extensions like StringUtil, IOUtils ... -->
+                <dependency>
+                  <groupId>org.apache.commons</groupId>
+                  <artifactId>commons-lang3</artifactId>
+                  <version>3.12.0</version>
+                </dependency>
+                
 		<dependency>
 			<groupId>commons-cli</groupId>
 			<artifactId>commons-cli</artifactId>