Bump python-smarttub to 0.0.46

[mdz]

Proposed change

Bump python-smarttub to 0.0.46 to fix authentication for new SmartTub accounts.

SmartTub migrated new user accounts from Auth0 to their own IDP endpoint, breaking authentication. This library update:

• Uses new /idp/signin endpoint instead of Auth0
• Parses new token response format
• Re-authenticates on token expiry (no refresh endpoint available in new IDP)

Changelog

mdz/python-smarttub@v0.0.45...v0.0.46

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• Fixes Cannot Authenticate with SmartTub #156317
• Library PR: Migrate authentication from Auth0 to SmartTub IDP mdz/python-smarttub#66

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user facing or API exposed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  • Updated version: python-smarttub==0.0.46

[mdz]

need to test token refresh, holding off

[mdz]

OK, all good, I was able to test successfully

[zweckj]

@mdz do you want to have this in the next patch release?