Remove pin for s3fs < 2026.2.0

[martyngigg]

The extract and load tests fail when upgrading s3fs past 2026.1.0, e.g

> cd infra/local
> docker compose up -d
> cd warehouses/accelerator_ops/extract_load/opralogweb/
> pytest --catalog-type=rest tests/

File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/s3fs/core.py", line 2587, in commit
    write_result = self._call_s3("put_object", **kw, **match)
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/s3fs/core.py", line 2421, in _call_s3
    return self.fs.call_s3(method, self.s3_additional_kwargs, *kwarglist, **kwargs)
           ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/fsspec/asyn.py", line 118, in wrapper
    return sync(self.loop, func, *args, **kwargs)
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/fsspec/asyn.py", line 103, in sync
    raise return_result
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/fsspec/asyn.py", line 56, in _runner
    result[0] = await coro
                ^^^^^^^^^^
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/s3fs/core.py", line 451, in _call_s3
    return await _error_wrapper(
           ^^^^^^^^^^^^^^^^^^^^^
        method, kwargs=additional_kwargs, retries=self.retries
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/ubuntu/code/analytics-data-platform/.venv/lib/python3.13/site-packages/s3fs/core.py", line 214, in _error_wrapper
    raise err
PermissionError: Access Denied.

The issues seems to have arisen when fsspec/s3fs#1002 was merged. Reversing the changes locally recovers the original behaviour.