pom.xml: update commons-lang3 to 3.4

@see https://commons.apache.org/proper/commons-lang/release-notes/RELEASE-NOTES-3.4.txt

No functional changes.

Author: php-coder

pom.xml

@@ -24,7 +24,7 @@
 		<javax.validation.version>1.1.0.Final</javax.validation.version>
 		<javax.persistence.version>1.0.0.Final</javax.persistence.version>
 		<servlet.api.version>3.0.20100224</servlet.api.version>
-		<commons.lang.version>3.3.2</commons.lang.version>
+		<commons.lang.version>3.4</commons.lang.version>
 		<commons.io.version>2.4</commons.io.version>
 		<thymeleaf.togglz.version>1.0.1.RELEASE</thymeleaf.togglz.version>
 		<togglz.version>2.2.0.Final</togglz.version>