fix!: adapt to updated python sdk

[yehonatanz]

Description

Adapt SDK usage to changes from Universal-Commerce-Protocol/python-sdk#48

• minor fix in extracting shopping services

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

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Is this a Breaking Change or Removal?

Yes

• I have added ! to my PR title (e.g., feat!: remove field).
• I have added justification below.

Breaking Changes / Removal Justification

Python SDK has been updated in a non backwards compatible way, this is a breaking change that adapts this repo to the SDK's breakin change.

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Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[damaz91]

Thanks for flagging. We are fixing this directly in the Python SDK as part of Universal-Commerce-Protocol/python-sdk#51 - once that's done, we'll merge #50 to bring back conformance to "green" state!