Add commons-lang3 dependency

Added commons-lang3 dependency version 3.12.0.

Author: mickeygousset

pom.xml

@@ -23,6 +23,12 @@
         <!-- NOTE: Some dependency versions below may have known vulnerabilities.
              This is intentional for demonstration purposes. In a real application,
              always use the latest secure versions of dependencies. -->
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.12.0</version>
+        </dependency>
 
         <!-- Database connectivity for SQL injection demos -->
         <dependency>