[Key Vault] Linting updates for pylint 3.2.5

[mccoyp]

Description

Resolves #34160 and #34158. Almost all changes are to include keyword-only arguments in method signatures, with the rest mostly removing extraneous pylint suppressions.

Validating next-pylint pipeline run: https://dev.azure.com/azure-sdk/internal/_build/results?buildId=4116741&view=logs&j=e5b925a9-9650-5321-24fd-5d9499fe02b8&t=e1fa7d9e-8471-5a74-cd7d-e1c9a992e07e

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.

[mccoyp]

/azp run python - keyvault - tests-weekly

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[mccoyp]

/azp run python - keyvault - tests-weekly

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[azure-sdk]

API change check

API changes are not detected in this pull request.