use old version of npm

.gitlab-ci.yml

-image: node:18
+image: node:14
 
 stages:
   - build
@@ -161,7 +161,7 @@ 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_18.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
     - mvn -DskipTests=true clean install -pl web -am
     - mvn test -pl web
@@ -393,7 +393,7 @@ build_war:
 
     - apt-get update
     - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
-    - curl -sL https://deb.nodesource.com/setup_18.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
     - ant maven-build-with-doc
     - cp web/target/*.war minerva.war
@@ -404,7 +404,7 @@ 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_18.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
@@ -422,7 +422,7 @@ test:code_validation:
   script:
     - apt-get update
     - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
-    - curl -sL https://deb.nodesource.com/setup_18.x | bash -
+    - curl -sL https://deb.nodesource.com/setup_12.x | bash -
     - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
 
     - mvn clean compile validate