add 'org.apache.commons:commons-lang3:3.12.0' as explicit dependency + update to PSU v1.6

Author: johanneshiry

build.gradle

@@ -50,7 +50,7 @@ repositories {
 
 dependencies {
 	//	 ie³ power system utils
-	implementation 'com.github.ie3-institute:PowerSystemUtils:1.5.3'
+	implementation 'com.github.ie3-institute:PowerSystemUtils:1.6'
 
 	implementation 'tech.units:indriya:2.1.2'
 
@@ -85,6 +85,8 @@ dependencies {
 
 	implementation 'commons-io:commons-io:2.11.0' // I/O functionalities
 	implementation 'org.apache.commons:commons-compress:1.21' // I/O functionalities
+	implementation 'org.apache.commons:commons-lang3:3.12.0'
+
 }
 
 wrapper {