chore: generate grafeas

[parthea]

Towards #17305

See follow up issue #17311

[gemini-code-assist]

Code Review

This pull request updates the minimum grpcio dependency version to 1.59.0, adjusts Nox configuration to dynamically resolve constraints files, and refactors unit tests to parameterize request types. Feedback on these changes highlights a potential issue in noxfile.py where dynamic path resolution using ALL_PYTHON[0] might point to a non-existent file if the corresponding constraints file is missing. Additionally, in test_grafeas.py, passing instantiated objects like {} in @pytest.mark.parametrize introduces shared mutable state across tests and makes the parameter name request_type misleading; it is recommended to pass types and instantiate them within the tests instead.

[gemini-code-assist]

If ALL_PYTHON[0] (the minimum Python version) does not match the version in the constraints file name (e.g., if ALL_PYTHON[0] is "3.7" but only constraints-3.10.txt exists), this dynamic path resolution will point to a non-existent file and cause Nox sessions to fail.

Consider adding a fallback check to ensure the file exists, or dynamically locate the constraints file using a glob pattern.

[gemini-code-assist]

There are two issues with this parameterization:

1. Shared Mutable State: Passing {} as a parameter in @pytest.mark.parametrize means the same dictionary instance is shared across all test runs. If any test or underlying client code mutates the request, it will pollute the state for subsequent tests, potentially causing flaky tests.
2. Misleading Naming: The parameter is named request_type, but it now receives an instance (e.g., GetOccurrenceRequest() or {}) instead of a type/class.

It is safer and cleaner to pass the classes/types (or callables) and instantiate them inside the test (e.g., request = request_type()), which guarantees a fresh, independent instance for every test execution.

Suggested change

	@pytest.mark.parametrize(
	"request_type",
	[
	grafeas.GetOccurrenceRequest,
	dict,
	grafeas.GetOccurrenceRequest(),
	{},
	],
	)
	@pytest.mark.parametrize(
	"request_type",
	[
	grafeas.GetOccurrenceRequest,
	dict,
	],
	)