Increase debezium-sqlserver init script wait time to 30 seconds

[jamesnetherton]

Attempt to fix some frequent deadlock issues encountered with container startup.

SQLServerException: Could not update the metadata that indicates database testDB is enabled for Change Data Capture. The failure occurred when executing the command 'sp_addrolemember 'db_owner', 'cdc''. The error returned was 1205: 'Transaction (Process ID 51) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.'. Use the action and error to determine the cause of the failure and resubmit the request.