Build: Bump fsspec from 2025.10.0 to 2025.12.0

Bumps [fsspec](https://github.com/fsspec/filesystem_spec) from 2025.10.0 to 2025.12.0.
- [Commits](fsspec/filesystem_spec@2025.10.0...2025.12.0)

---
updated-dependencies:
- dependency-name: fsspec
  dependency-version: 2025.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]