Create a the code to connect to the database via spring jpa

@Configuration
@EnableJpaRepositories(basePackages = "com.example.demo.repo")
@EnableTransactionManagement
public class DBConfiguration {

  @Bean
  public DataSource dataSource() {
      HikariConfig config = new HikariConfig();
      config.setDriverClassName("com.mysql.cj.jdbc.Driver");
      config.setJdbcUrl("jdbc:mysql://localhost:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC");
      config.setUsername("root");
      config.setPassword("root");
      return new HikariDataSource(config);
  }
  
  @Bean
  public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    vendorAdapter.setGenerateDdl(true);
    LocalContainerEntityManagerFactoryBean factory =