Document API change for IDBConnection::getDatabaseProvider

nextcloud/server#54228

Signed-off-by: Varun Patil <varunpatil@ucla.edu>

Author: pulsejet

developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_32.rst

@@ -77,6 +77,7 @@ Changed APIs
 
 - ``\OCP\Authentication\TwoFactorAuth\ILoginSetupProvider::getBody``, ``\OCP\Authentication\TwoFactorAuth\IPersonalProviderSettings::getBody`` and ``\OCP\Authentication\TwoFactorAuth\IProvider::getBody`` return type was broaden from ``\OCP\Template`` class to ``\OCP\Template\ITemplate`` interface. Should not change anything for applications.
 - ``\OCP\Files\Template\BeforeGetTemplatesEvent`` now takes an optional boolean constructor value, ``withFields``, that allows you to explicitly control whether template fields should be extracted. The default value is ``false``.
+- ``\OCP\IDBConnection::getDatabaseProvider`` now takes an optional argument `strict`; when specified the output will differentiate MySQL and MariaDB.
 
 Deprecated APIs
 ^^^^^^^^^^^^^^^