build > update gradle to 7.1.1

Author: SgtSilvio

gradle.properties

@@ -12,5 +12,5 @@ slf4j-simple.version=1.7.30
 #
 # plugins
 #
-plugin.license.version=0.15.0
+plugin.license.version=0.16.1
 plugin.utf8.version=0.1.0

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists