[keyvault] Drop Python 3.6 support in packages

[wonhyeongseo]

Description

Fix #25077

Is your feature request related to a problem? Please describe.
In accordance with the August Milestone of Azure for dropping Python 3.6 support, I have made changes to the keyvault packages.

Describe the solution you'd like
Drop Python 3.6 support and add 3.10 to the supported versions list.

Describe alternatives you've considered
None

Additional context
#25077
#22367
4a7fc09

If an SDK is being regenerated based on a new swagger spec, a link to the pull request containing these swagger spec changes has been included above.

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[ghost]

Thank you for your contribution wonhyeongseo! We will review the pull request and get back to you soon.

[mccoyp]

Hi @wonhyeongseo, thank you so much for opening a PR! I'll take a look at this as soon as I can next week.

[wonhyeongseo]

@mccoyp Thank you for the review! I just can't seem to grasp the pylint error in the Build pipeline. When you commited 8 days ago here, it seems to have passed fine. So I would like any kind of input to pass the pipeline- for an easier review process on your part. Thank you again for commenting on my first PR.

[mccoyp]

@mccoyp Thank you for the review! I just can't seem to grasp the pylint error in the Build pipeline. When you commited 8 days ago here, it seems to have passed fine. So I would like any kind of input to pass the pipeline- for an easier review process on your part. Thank you again for commenting on my first PR.

The current pipeline failures are likely coming from an unrelated change that updated the version of some pylint guidelines -- I'm fixing that at the moment 🙂 I'll let you know if you need to rebase your PR with the main branch once that's done.

[scbedd]

Requesting changes to revert duplicate py3.9 versions added to the matrix configs. Everything else looks good, but I would prefer to let the keyvault owner @mccoyp sign off on this!

[wonhyeongseo]

@scbedd @mccoyp @lmazuel
Thank you for your fantastic reviews and comments! I will continue to contribute to Azure SDK knowing that I can learn rapidly from awesome people like you! Have a great day!

[mccoyp]

Thank you so much for updating the PR! This all looks good to me. The pipeline is still red because of the failure being worked on in #25519, but I'll go ahead and merge this since it's unrelated.

[mccoyp]

/check-enforcer override

Changes addressed (thanks for the review, Scott!)