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:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -11,7 +11,7 @@ contourpy==1.3.3 ; python_version >= "3.11" and python_version < "3.15"
 cycler==0.12.1 ; python_version >= "3.11" and python_version < "3.15"
 filelock==3.20.0 ; python_version >= "3.11" and python_version < "3.15"
 fonttools==4.61.0 ; python_version >= "3.11" and python_version < "3.15"
-fsspec==2025.10.0 ; python_version >= "3.11" and python_version < "3.15"
+fsspec==2025.12.0 ; python_version >= "3.11" and python_version < "3.15"
 healpy==1.18.1 ; python_version >= "3.11" and python_version < "3.15"
 idna==3.10 ; python_version >= "3.11" and python_version < "3.15"
 iniconfig==2.3.0 ; python_version >= "3.11" and python_version < "3.15"