[ci] fix numpy checks in smoke tests

[jameslamb]

As of numpy==1.26.1, numpy have decided to bundle 4200+ additional files from meson.

That results in 3800+ new errors when checking numpy w/ pydistcheck, summarized as follows:

1. [mixed-file-extensions] Found a mix of file extensions for the same file type: .cc (35), .cpp (156)
2. [mixed-file-extensions] Found a mix of file extensions for the same file type: .yaml (94), .yml (60)
3-3883. [path-contains-spaces] Found path with spaces ...
...
3884. [too-many-files] Found 7261 files. Only 3000 allowed.
errors found while checking: 3884

(build link)

The inclusion of all these new files appears to be intentional:

• Tracking issue: defaulting to Meson - follow-up tasks numpy/numpy#23981 (comment)
• Tracking issue: defaulting to Meson - follow-up tasks numpy/numpy#23981 (comment)

This PR adjust the project's smoke tests to allow that.