try to fix local tests

[squangelo]

Local tests fail on main:

============================================================================ short test summary info ============================================================================
FAILED tests/test_config.py::test_invalid_type_specified[cascade.yml] - Failed: DID NOT RAISE <class 'ValueError'>
FAILED tests/test_config.py::test_gcp_resource[cascade.yaml] - TypeError: 'NoneType' object is not subscriptable
FAILED tests/test_config.py::test_gcp_resource[cascade.yml] - FileExistsError: [Errno 17] File exists in the fake filesystem: '/cascade.yml'
FAILED tests/test_config.py::test_databricks_resource[cascade.yaml] - FileExistsError: [Errno 17] File exists in the fake filesystem: '/cascade.yaml'
FAILED tests/test_config.py::test_databricks_resource[cascade.yml] - FileExistsError: [Errno 17] File exists in the fake filesystem: '/cascade.yml'
FAILED tests/test_config.py::test_merged_resources[cascade.yaml] - FileExistsError: [Errno 17] File exists in the fake filesystem: '/cascade.yaml'
FAILED tests/test_config.py::test_merged_resources[cascade.yml] - FileExistsError: [Errno 17] File exists in the fake filesystem: '/cascade.yml'
FAILED tests/test_torch.py::test_torchjob - FileNotFoundError: https://storage.googleapis.com/upload/storage/v1/b/ds-cash-production-cascade/o
ERROR tests/test_config.py::test_invalid_type_specified[cascade.yaml] - AttributeError: torch._inductor.config.os does not exist

Haven't had time to dig much into it but it looks like it's due to different tests filesystem fixtures interacting with each other. After a letting goose got at it for a while I got it down to only error in test_torch.py:

============================================================================ short test summary info ============================================================================
FAILED tests/test_torch.py::test_torchjob - ModuleNotFoundError: No module named 'block_cascade.executors.vertex.executor.GcpExecutor'; 'block_cascade.executors.vertex.executor' is not a package
ERROR tests/test_vertex_executor.py::test_stage - OSError: could not create numbered dir with prefix pytest- in /var/folders/lt/6znk4r891xdcrhm2s2cjlzk40000gn/T/pytest-of-angelo after 10 tries
=============================================================== 1 failed, 35 passed, 3 warnings, 1 error in 5.72s ===============================================================