Bump com.github.ie3-institute:PowerSystemUtils from 2.0-SNAPSHOT to 2.0 (#268)

Author: dependabot[bot]

build.gradle

@@ -77,7 +77,7 @@ dependencies {
 	implementation "com.github.scopt:scopt_${scalaVersion}:+"
 
 	// ie³ internal repository
-	implementation('com.github.ie3-institute:PowerSystemUtils:2.0-SNAPSHOT') {
+	implementation('com.github.ie3-institute:PowerSystemUtils:2.0') {
 		exclude group: 'org.apache.logging.log4j'
 		exclude group: 'org.slf4j'
 		/* Exclude our own nested dependencies */