Estou com erro ao tentar conectar em banco de dados PostgreSQL 9.2.6 com Hibernate.

O banco de dados existe e é possível conectar via terminal.

Maven:

<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>42.2.2</version>
        </dependency>

entityManagerFactory:

public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean factoryBean = 
                new LocalContainerEntityManagerFactoryBean();

        JpaVendorAdapter vendorAdapater = new HibernateJpaVendorAdapter(); 
        factoryBean.setJpaVendorAdapter(vendorAdapater);

        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setUsername("postgres");
        dataSource.setPassword("postgres");
        dataSource.setUrl("jdbc::postgresql//localhost:5432/casadocodigo");
        dataSource.setDriverClassName("org.postgresql.Driver");

        factoryBean.setDataSource(dataSource);

        Properties props = new Properties();
        props.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
        props.setProperty("hibernate.show_sql", "true");
        props.setProperty("hibernate.hbm2ddl.auto", "update");

        factoryBean.setJpaProperties(props);

        factoryBean.setPackagesToScan("br.com.casadocodigo.loja.models");

        return factoryBean;

    }

Exceção:

java.sql.SQLException: No suitable driver found for jdbc::postgresql//localhost:5432/casadocodigo
    java.sql.DriverManager.getConnection(DriverManager.java:689)
    java.sql.DriverManager.getConnection(DriverManager.java:208)
    org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153)
    org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144)
    org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155)
    org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120)
    org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139)
    org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:380)
    org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:228)
    org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:171)
    org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)
    org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:162)
    org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1431)
    org.hibernate.jpa.internal.TransactionImpl.begin(TransactionImpl.java:61)