pip prod(deps): update cloudpickle requirement from <3.1.2 to <3.1.3

Updates the requirements on [cloudpickle](https://github.com/cloudpipe/cloudpickle) to permit the latest version.
- [Release notes](https://github.com/cloudpipe/cloudpickle/releases)
- [Changelog](https://github.com/cloudpipe/cloudpickle/blob/master/CHANGES.md)
- [Commits](cloudpipe/cloudpickle@0.1.0...v3.1.2)

---
updated-dependencies:
- dependency-name: cloudpickle
  dependency-version: 3.1.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-optional.txt

@@ -4,4 +4,4 @@ pyrevolve==2.2.6
 scipy<1.15.4
 distributed<2025.10.1
 click<9.0
-cloudpickle<3.1.2
+cloudpickle<3.1.3

requirements-testing.txt

@@ -6,6 +6,6 @@ nbval<0.11.1
 scipy<1.15.4
 pooch<1.8.3
 click<9.0
-cloudpickle<3.1.2
+cloudpickle<3.1.3
 ipympl<0.9.9
 ipykernel<7.0.0