Fix auth properties instantiation

[AtomicJon]

Many thanks for submitting your Pull Request :heart:!

What this PR does / why we need it: Fixing a bug where the properties on Auth definitions are passed the Auth definition itself rather than the propertiers during instantiation causing an invalid structure.

Special notes for reviewers:

Additional information (if needed):

[antmendoza]

Thank you @AtomicJon and sorry for my late reply, I have been on vacation.

Do you mind signing the commit, please follow https://github.com/serverlessworkflow/sdk-typescript/pull/173/checks?check_run_id=9099093885

[AtomicJon]

@antmendoza No problem! I've pushed an updated commit with the signing done.