Proposed changes

Updating Sauce Labs specific desired capability type definitions to match current offering. As part of that I also updated the deprecation warnings.

Source: https://docs.saucelabs.com/dev/test-configuration-options/#timezone

Types of changes

• Polish (an improvement for an existing feature)
• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (improvements to the project's docs)
• Specification changes (updates to WebDriver command specifications)
• Internal updates (everything related to internal scripts, governance documentation and CI files)

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Backport Request

• v8 back-ported PR

Reviewers: @webdriverio/project-committers