Bump homeconnect to 0.6.3

[DavidMStraub]

Proposed change

This bumps the homeconnect dependency to 0.6.3.

In the past, users (including myself) have often observed updates to the entities of the home_connect integration stopping after a day or so, even though the library was supposed to reconnect to the SSE stream on disconnects (see issue). It turned out this was because the connection was becoming "stale". The new library version solves this by listening for the keepalive messages in the SSE (that had previously been ignored) and reconnects if no keepalive has been received for a certain amount of time.

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

Example entry for configuration.yaml:

# Example configuration.yaml
home_connect:
  client_id: CLIENT_ID
  client_secret: CLIENT_SECRET

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue: Integration stops working after several hours DavidMStraub/homeconnect#3
• 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.
• Untested files have been added to .coveragerc.

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