nodejs 9 is not supported anymore

.gitlab-ci.yml

@@ -145,7 +145,7 @@ test:frontend:
   script: &test_backend_web_definition
     - apt-get update
     - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
-    - curl -sL https://deb.nodesource.com/setup_9.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
     - mkdir /etc/minerva/
     - cp test-db-ci.properties /etc/minerva/db.properties
@@ -297,7 +297,7 @@ build_war:
   script:
     - apt-get update
     - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
-    - curl -sL https://deb.nodesource.com/setup_9.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
     - ant maven-build
     - cp web/target/web-1.0.war minerva.war
@@ -308,7 +308,7 @@ test:dependency_conflict:
   script:
     - apt-get update
     - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
-    - curl -sL https://deb.nodesource.com/setup_9.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
 
     - mvn clean install -DskipTests=true