[py314] Use filter argument for extracting data from registry

[YooSunYoung]

I recently cleaned cache and re-downloaded pooch datasets using the latest dependencies installed.

I got this DeprecationWarning about the tar file extraction.
I guess it's sth we should fix?
It's not easy to reproduce since the cache should be cleaned...

.tox/py313/lib/python3.13/site-packages/ess/nmx/data/__init__.py:60: in get_small_mtz_samples
    return _registry.get_paths("mtz_samples.tar.gz")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/ess/reduce/data/_registry.py:207: in get_paths
    return [Path(path) for path in self._fetch(name, extractor=extractor)]
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/ess/reduce/data/_registry.py:247: in _fetch
    return self._registry.fetch(name, processor=extractor)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/pooch/core.py:599: in fetch
    return processor(str(full_path), action, self)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.tox/py313/lib/python3.13/site-packages/pooch/processors.py:121: in __call__
    self._extract_file(fname, self.extract_dir)
.tox/py313/lib/python3.13/site-packages/pooch/processors.py:262: in _extract_file
    tar_file.extractall(path=extract_dir)
../../../miniconda3/envs/nmx-dev-313/lib/python3.13/tarfile.py:2338: in extractall
    filter_function = self._get_filter_function(filter)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
../../../miniconda3/envs/nmx-dev-313/lib/python3.13/tarfile.py:2303: in _get_filter_function
    warnings.warn(
E   DeprecationWarning: Python 3.14 will, by default, filter extracted tar archives and reject files or modify their metadata. Use the filter argument to control this behavior.

[jl-wynen]

It looks like this needs to be updated in pooch to explicitly pass a filter. But judging by https://docs.python.org/3/library/tarfile.html#tarfile.data_filter (which is the default filter in 3.14+), we should be fine because our tar files only contain regular files in the same directory.