Bump h5netcdf from 1.6.3 to 1.6.4 (#744)

Bumps [h5netcdf](https://github.com/h5netcdf/h5netcdf) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/h5netcdf/h5netcdf/releases)
- [Changelog](https://github.com/h5netcdf/h5netcdf/blob/main/CHANGELOG.rst)
- [Commits](h5netcdf/h5netcdf@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: h5netcdf
  dependency-version: 1.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ requests==2.32.4
 numpy==2.3.2
 numpy==1.26.4; python_version < '3.10'
 scipy==1.16.1
-h5netcdf==1.6.3
+h5netcdf==1.6.4
 h5py==3.14.0
 pillow==11.3.0
 loguru==0.7.3