Bump fsspec from 2026.2.0 to 2026.3.0 (#1402)

Bumps [fsspec](https://github.com/fsspec/filesystem_spec) from 2026.2.0 to 2026.3.0.
- [Commits](fsspec/filesystem_spec@2026.2.0...2026.3.0)

---
updated-dependencies:
- dependency-name: fsspec
  dependency-version: 2026.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.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==3.24.2 ; python_version >= "3.11" and python_version < "3.15"
 fonttools==4.61.1 ; python_version >= "3.11" and python_version < "3.15"
-fsspec==2026.2.0 ; python_version >= "3.11" and python_version < "3.15"
+fsspec==2026.3.0 ; python_version >= "3.11" and python_version < "3.15"
 healpy==1.19.0 ; python_version >= "3.11" and python_version < "3.15"
 idna==3.11 ; python_version >= "3.11" and python_version < "3.15"
 iniconfig==2.3.0 ; python_version >= "3.11" and python_version < "3.15"