upgrade to pg v8 and sequelize v6

[popmanhe]

"dependencies": { "pg": "^8.5.1", "sequelize": "^6.5.0" },

If I upgrade to the latest version of pg and sequelize, queryInterface becomes camelCase.

 static drop(options) {
    const method = this.options.treatAsView ? 'dropView' : 'dropTable';

    return this.queryInterface[method](
      this.getTableName(options), options
    );
  }

static syncView(options) {
    return this.queryInterface.createView(
      this.getTableName(options),
      this.getViewDefinition(),
      options
    );
  }