Allow using on PHP 7.3 with Composer 2

Backport removal of deprecated APIs from develop

The method is not used for anything else than skipping tests for specific drivers. Cross-driver portability should be established by drivers, not outside of them based on their name.

Remove deprecated AbstractSchemaManager::getFilterSchemaAssetsExpression(), Configuration::getFilterSchemaAssetsExpression() and Configuration::getFilterSchemaAssetsExpression()

Simplify Driver::connect() signature

Remove MasterSlaveConnection

It has been deprecated in favor of PrimaryReplicaConnection

Remove SQL Anywhere platform and driver

Driver::connect() should throw only driver-level exceptions

Deprecate Driver::getDatabase()

Fix DSN detection in the IBM DB2 driver