Bump httpx and httpcore

[uvjustin]

Bump httpx to 0.22.0
Bump httpcore to 0.14.7

Proposed change

Bump httpx and httpcore
httpx changelog: encode/httpx@0.21.3...0.22.0
httpcore changelog: encode/httpcore@0.14.5...0.14.7

In particular, encode/httpcore@7ddb4ca may be of some use to us.

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: fixes #
• This PR is related to issue: Generic Camera randomly stops working #67156
• Link to documentation pull request:

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

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

• 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.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
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To help with the load of incoming pull requests:

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[bdraco]

Tested and working as expected. Hopefully they get h11 unpinned soon.

[bdraco]

Looks like there is a PR for h11 being unpinned in progress encode/httpcore#503