Merge branch 'develop' into 'master'

Updated Gradle and set Java 17 for CI.

See merge request !11

.gitlab-ci.yml

-image: openjdk:11
+image: eclipse-temurin:17
 
 workflow:
   rules:
@@ -15,4 +15,4 @@ pages:
       - public
   rules:
     - if: '$CI_COMMIT_BRANCH == "master"'
-  
\ No newline at end of file
+  

gradle/wrapper/gradle-wrapper.properties

 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists