Fix ModuleNotFoundError: No module named 'qiskit_ibm_runtime.utils.RuntimeEncoder'

[ohtanim]

Description of Change

Those python module path changes were introduced in recent qiskit-ibm-runtime updates. Need to adapt to those changes. Unfortunately, 2 files should also be updated but were not covered in #166.

Checklist ✅

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Ticket

• Fixes #
• Is Part of Fix ModuleNotFoundError: No module named 'qiskit_ibm_runtime.utils.result_decoder' #166