deps: bump the prod-deps group across 1 directory with 2 updates

Bumps the prod-deps group with 2 updates in the / directory: [matplotlib](https://github.com/matplotlib/matplotlib) and [fastparquet](https://github.com/dask/fastparquet).


Updates `matplotlib` from 3.10.7 to 3.10.8
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.10.7...v3.10.8)

Updates `fastparquet` from 2024.11.0 to 2025.12.0
- [Commits](dask/fastparquet@2024.11.0...2025.12.0)

---
updated-dependencies:
- dependency-name: matplotlib
  dependency-version: 3.10.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: prod-deps
- dependency-name: fastparquet
  dependency-version: 2025.12.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: prod-deps
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]