update default python version for packs to be a list

[CLAassistant]

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[sravs-dev]

@armab I have signed the CLA, but it still shown as pending. Could you please help?

[arm4b]

@sravs-dev Might be because you created commits on behalf of @sravanthi-konduru github account, but signed CLA as @sravs-dev? The CLA needs to be signed from the commit owner account.

[sravs-dev]

@armab opened a new PR to resolve commit log issues. Closing this one