Update ONVIF to Zeep 4.0/httpx

[hunterjm]

Proposed change

This PR is the long-term fix for #41907 by updating the dependent library to utilize zeep[async]==4.0.0.

With the move to httpx we are also able to address the comments in #38729 by adding a get_snapshot call directly inside the parent library.

Finally, this includes changes to how we determine creation of pullpoint subscriptions, partially solving the issues raised in #41949

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)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: N/A
• This PR is related to issue: Bump ONVIF and pin Zeep #41907, Automatically configure HTTP auth type in ONVIF snapshots #38729, Fix onvif sensor detection and onvif stop service call #41949
• Link to documentation pull request: N/A

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
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

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

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• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
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[bdraco]

Verified working with a doorbird 👍

[bdraco]

Is the httpx AsyncClient being closed on unload ?

[bdraco]

Just the question about the client being closed and this looks good to go.

[bdraco]

Reloaded, and restarted. It appears the session is being closed as no error was logged 👍

[hunterjm]

Yeah, clients are closed inside lib on call to device.close(). They weren’t inside the config flow initially hence the additions there.