try with --legacy-peer-deps and cache verify

Jenkinsfile

@@ -62,7 +62,8 @@ pipeline {
                             sh 'echo "registry=https://nexus.ozg-sh.de/repository/npm-proxy" >> ~/.npmrc'
                             sh 'echo "_auth=amVua2luczpQaihzX0ZNNFU5ZC8=" >> ~/.npmrc'
 
-                            sh 'npm install --no-optional --force'
+							sh 'npm cache verify'
+                            sh 'npm install --no-optional --legacy-peer-deps'
 
                             if (env.BRANCH_NAME == 'release') {
                                 sh 'npm run ci-prodBuild'