The GitHub Actions job "Tests" on airflow.git has failed.
Run started by GitHub user potiuk (triggered by potiuk).

Head commit for run:
98494cd6d8416c982138d1a2c18b0ced6eb96ff9 / Jarek Potiuk <[email protected]>
Fix errors in Databricks SQL operator introduced when refactoring

When SQLExecuteQueryOperator has been introduced in #25717, it
introduced some errors in the Databricks SQL operator:

* The schema (description) parameter has been passed as _process_output
  parameter from Hook's output
* The run() method of DatabricksHook was not conforming to other
  run methods of the Hook - it was returning Tuple of the
  result/description
* The _process_output type was not specified - if scalar was used
  it returned different output than without it and it was not
  specified in the DBApiHook.

This PR fixes it by:

* the Databricks Hook is now conformant to the other DBAPIHooks in
  terms of value returned by Hook (backwards incompatible so we
  need to bump major version of the provider)
* the DBApiHook now has "last_description" field which on one hand
  makes it stateless, on the other, the state reflects the
  description of the last run method and is not a problem to keep.
  This implies 1.4 version of common-sql provider as this is a new
  feature for the provider
* the DBApiHook now has "scalar_return_last" field that indicates
  if scalar output was specified.
* Python dbapi's "description" is properly named now - previously it was
  "schema" which clashed with the "schema" name passed to hook
  initialisation - the actual database schema

Report URL: https://github.com/apache/airflow/actions/runs/3535715822

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