Bump API spec for Python SDK (#454)

## Changes
Bumps the Python SDK API spec to the same version as in
databricks/databricks-sdk-go#706.

## Tests
<!-- 
How is this tested? Please see the checklist below and also describe any
other relevant tests
-->

- [ ] `make test` run locally
- [ ] `make fmt` applied
- [ ] relevant integration tests applied

.codegen/_openapi_sha

@@ -1 +1 @@
-d136ad0541f036372601bad9a4382db06c3c912d
+22f09783eb8a84d52026f856be3b2068f9498db3

.gitattributes

@@ -142,7 +142,6 @@ examples/metastore_assignments/list_metastore_assignments.py linguist-generated=
 examples/metastores/assign_metastores.py linguist-generated=true
 examples/metastores/create_metastores.py linguist-generated=true
 examples/metastores/current_metastores.py linguist-generated=true
-examples/metastores/enable_optimization_metastores.py linguist-generated=true
 examples/metastores/get_metastores.py linguist-generated=true
 examples/metastores/list_metastores.py linguist-generated=true
 examples/metastores/summary_metastores.py linguist-generated=true