pip prod(deps): update distributed requirement

Updates the requirements on [distributed](https://github.com/dask/distributed) to permit the latest version.
- [Release notes](https://github.com/dask/distributed/releases)
- [Changelog](https://github.com/dask/distributed/blob/main/docs/release-procedure.md)
- [Commits](https://github.com/dask/distributed/commits)

---
updated-dependencies:
- dependency-name: distributed
  dependency-version: 2026.3.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-optional.txt

@@ -2,6 +2,6 @@ matplotlib<3.10.9
 pillow>11,<12.1.2
 pyrevolve==2.2.7
 scipy<1.15.4
-distributed<2026.1.3
+distributed<2026.3.1
 click<9.0
 cloudpickle<3.1.3