⬆️ Bump distributed from 2.26.0 to 2.30.0 (#174)

Bumps [distributed](https://github.com/dask/distributed) from 2.26.0 to 2.30.0.
- [Release notes](https://github.com/dask/distributed/releases)
- [Changelog](https://github.com/dask/distributed/blob/master/docs/release-procedure.md)
- [Commits](dask/distributed@2.26.0...2.30.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

pyproject.toml

@@ -13,7 +13,7 @@ dask = "^2.26.0"
 dask-cuda = {version = "^0.15.0", optional = true}
 dask_labextension = "^3.0.0"
 datashader = "^0.11.1"
-distributed = "^2.26.0"
+distributed = "^2.30.0"
 geopandas = "^0.8.1"
 geoviews = "^1.8.1"
 h5netcdf = "^0.8.1"