Update package-lock.json and configuration files: Upgrade lockfile version to 3, update @vue/cli-plugin-babel and @vue/cli-plugin-eslint to version 5.0.0, and change database connection details to use 'miriam_user' and host 'tsschulz.de' with the new password.

config/database.js

@@ -1,7 +1,7 @@
 const { Sequelize } = require('sequelize');
 
-const sequelize = new Sequelize('miriamgemeinde', 'miriamgemeinde', 'hitomisan', {
-  host: 'localhost',
+const sequelize = new Sequelize('miriamgemeinde', 'miriam_user', 'hitomisan', {
+  host: 'tsschulz.de',
   dialect: 'mysql',
   retry: {
     match: [