com.mysql.jdbc.exceptions.mysqlnontransientConnectionException: el cliente no admite el protocolo de autenticación solicitado por servidor; Considere actualizar el cliente MySQL

 the version of mysql in pom.xml should be same as the version of mysql installed (mine is 8.0.14)
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.14</version>
Obedient Ostrich