This patch release fixes a problem where the underlying K8s Python libraries present the Probe object with a field named '_exec' as opposed to 'exec' as is specified in the OpenAPI swagger file. I suspect this was to avoid the reserved-word status of 'exec' in earlier versions of Python. This field is caught by internal 'special cases' code and is mapped to the value we expect.
If you are a user of the 'hikaru' package, you should automatically get this patched version when installing.