Using new template for pom version

.gitlab-ci.yml

@@ -15,8 +15,6 @@ variables:
   # Nexus Deployment settings, please use env vars in Settings -> CI/CD -> Variables.
   MAVEN_SETTINGS_PATH: ".m2/settings.xml"
   MAVEN_DEPLOY_OPTS: "--settings=$MAVEN_SETTINGS_PATH"
-  # File for storing the POM project.version
-  VARIABLES_FILE: ./variables.txt
 
 # Include Java settings from Gitlab templates repo.
 include:
@@ -48,7 +46,7 @@ Get POM version:
     - main
   stage: build_version
   extends:
-    - .get-pom-version
+    - .get-pom-version-to-env
 
 # Build and deploy all the JARs to GWDG Nexus, and build all the DEBs and store DEBs to artifacts.
 Build and Deploy JARs: