[Fix] update running workspace to include ManagedServicesCustomerManagedKeyID (#5034)

## Changes
The change being made are to support the updation of
managed_services_customer_managed_key_id as the API supports updating it
even for running workspaces.

## Tests
I updated the changed binary in dev_overrides and updated a running
workspace to make the update.

- [x] `make test` run locally
- [ ] relevant change in `docs/` folder
- [ ] covered with integration tests in `internal/acceptance`
- [ ] using Go SDK
- [ ] using TF Plugin Framework
- [ ] has entry in `NEXT_CHANGELOG.md` file

---------

Co-authored-by: Alex Ott <[email protected]>

Author: parthusun8

NEXT_CHANGELOG.md

@@ -8,6 +8,8 @@
 
 ### Bug Fixes
 
+* Allow update `managed_services_customer_managed_key_id` in `databricks_mws_workspaces` ([#5034](https://github.com/databricks/terraform-provider-databricks/pull/5034))
+
 ### Documentation
 
 * Clarify the use of `workspace-consume` entitlement and access to Databricks One ([#5043](https://github.com/databricks/terraform-provider-databricks/pull/5043))

mws/resource_mws_workspaces.go

@@ -292,6 +292,9 @@ func (a WorkspacesAPI) UpdateRunning(ws Workspace, timeout time.Duration) error
 	if ws.StorageCustomerManagedKeyID != "" {
 		request["storage_customer_managed_key_id"] = ws.StorageCustomerManagedKeyID
 	}
+	if ws.ManagedServicesCustomerManagedKeyID != "" {
+		request["managed_services_customer_managed_key_id"] = ws.ManagedServicesCustomerManagedKeyID
+	}
 	if ws.CustomTags != nil {
 		if !a.client.IsAws() {
 			return fmt.Errorf("custom_tags are only allowed for AWS workspaces")

mws/resource_mws_workspaces_test.go

@@ -665,9 +665,10 @@ func TestResourceWorkspaceUpdate(t *testing.T) {
 				Method:   "PATCH",
 				Resource: "/api/2.0/accounts/abc/workspaces/1234",
 				ExpectedRequest: map[string]any{
-					"credentials_id":                  "bcd",
-					"network_id":                      "fgh",
-					"storage_customer_managed_key_id": "def",
+					"credentials_id":                           "bcd",
+					"network_id":                               "fgh",
+					"storage_customer_managed_key_id":          "def",
+					"managed_services_customer_managed_key_id": "def",
 				},
 			},
 			{
@@ -1545,10 +1546,11 @@ func TestResourceWorkspaceUpdatePrivateAccessSettings(t *testing.T) {
 				Method:   "PATCH",
 				Resource: "/api/2.0/accounts/abc/workspaces/1234",
 				ExpectedRequest: map[string]any{
-					"credentials_id":                  "bcd",
-					"network_id":                      "fgh",
-					"storage_customer_managed_key_id": "def",
-					"private_access_settings_id":      "pas",
+					"credentials_id":                           "bcd",
+					"network_id":                               "fgh",
+					"storage_customer_managed_key_id":          "def",
+					"managed_services_customer_managed_key_id": "def",
+					"private_access_settings_id":               "pas",
 				},
 			},
 			{