Use context aware version of function for CRUD

[nukosuke]

https://www.terraform.io/plugin/sdkv2/guides/v2-upgrade-guide#more-support-for-context-context

terraform-provider-zendesk/zendesk/resource_zendesk_group.go

Lines 14 to 17 in 0dc7db5

	Create: func(d *schema.ResourceData, meta interface{}) error {
	zd := meta.(*client.Client)
	return createGroup(d, zd)
	},

should be

 CreateContext: func(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics { 
 	zd := meta.(*client.Client) 
 	return createGroup(ctx, d, zd) 
 },