Ignore warning from nptyping as workaround

[KumoLiu]

workaround for #8060

Description

Ignore warning from nptyping as workaround

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[KumoLiu]

We didn't update the version of nptyping, which is a dependency for pynrrd, yet the error suddenly started occurring. As a workaround, I suppress the warning.
https://github.com/ramonhagenaars/nptyping/blob/785cd07e65f992f47256398fd01f62067928d29c/nptyping/typing_.py#L51

[KumoLiu]

/build

[ericspod]

I'm not seeing from the mentioned issue what the nptyping problem is, I guess this fix is fine so long as nothing else is hidden. I would just check that it's not related to Numpy2 or something else being updated elsewhere.