Update zarr requirement from <3,>=2.13 to >=2.13,<4

Updates the requirements on [zarr](https://github.com/zarr-developers/zarr-python) to permit the latest version.
- [Release notes](https://github.com/zarr-developers/zarr-python/releases)
- [Changelog](https://github.com/zarr-developers/zarr-python/blob/main/docs/release-notes.rst)
- [Commits](zarr-developers/zarr-python@v2.13.0...v3.0.4)

---
updated-dependencies:
- dependency-name: zarr
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -63,7 +63,7 @@ dependencies = [
   "toolz",
   "xarray >=2023.11.0, !=2024.6.0",
   "xclim >=0.55, <0.56",
-  "zarr >=2.13,<3"
+  "zarr >=2.13,<4"
 ]
 
 [project.optional-dependencies]