Bump gcal_sync to 0.6.2 and switch to google calendar async iterator api

[allenporter]

Proposed change

Update google calendar to use a new async iterator api when paging through events, a followup discussed in #70173

Diff: allenporter/gcal_sync@0.5.0...0.6.2

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• Dependency upgrade
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• Breaking change (fix/feature causing existing functionality to break)
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[allenporter]

In draft while I figure out this error (doesn't happen in my py 3.9. tests, but happens here)

/usr/local/lib/python3.9/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1030: in _gcd_import
    ???
<frozen importlib._bootstrap>:1007: in _find_and_load
    ???
<frozen importlib._bootstrap>:986: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:680: in _load_unlocked
    ???
venv/lib/python3.9/site-packages/_pytest/assertion/rewrite.py:168: in exec_module
    exec(co, module.__dict__)
tests/components/google/conftest.py:14: in <module>
    from homeassistant.components.google import CONF_TRACK_NEW, DOMAIN
homeassistant/components/google/__init__.py:11: in <module>
    from gcal_sync.api import GoogleCalendarService
venv/lib/python3.9/site-packages/gcal_sync/api.py:64: in <module>
    class ListEventsResponse(BaseModel):
pydantic/main.py:187: in pydantic.main.ModelMetaclass.__new__
    ???
pydantic/typing.py:356: in pydantic.typing.resolve_annotations
    ???
/usr/local/lib/python3.9/typing.py:254: in _eval_type
    return t._evaluate(globalns, localns, recursive_guard)
/usr/local/lib/python3.9/typing.py:493: in _evaluate
    eval(self.__forward_code__, globalns, localns),
<string>:1: in <module>
    ???
/usr/local/lib/python3.9/typing.py:243: in inner
    return func(*args, **kwds)
/usr/local/lib/python3.9/typing.py:316: in __getitem__
    return self._getitem(self, parameters)
/usr/local/lib/python3.9/typing.py:433: in Optional
    return Union[arg, type(None)]
/usr/local/lib/python3.9/typing.py:243: in inner
    return func(*args, **kwds)
/usr/local/lib/python3.9/typing.py:316: in __getitem__
    return self._getitem(self, parameters)
/usr/local/lib/python3.9/typing.py:421: in Union
    parameters = _remove_dups_flatten(parameters)
/usr/local/lib/python3.9/typing.py:215: in _remove_dups_flatten
    all_params = set(params)
E   TypeError: unhashable type: 'list'

[MartinHjelmare]

I think you need to use List and Dict in pydantic model attribute types instead of list and dict.

https://github.com/allenporter/gcal_sync/blob/8e0ccecb1f905e6cb2c90e0b32f1d2e8236ead2e/gcal_sync/api.py#L67