Bump ray[default,rllib] from 2.0.0 to 2.5.1

Bumps [ray[default,rllib]](https://github.com/ray-project/ray) from 2.0.0 to 2.5.1.
- [Release notes](https://github.com/ray-project/ray/releases)
- [Commits](ray-project/ray@ray-2.0.0...ray-2.5.1)

---
updated-dependencies:
- dependency-name: ray[default,rllib]
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

examples/requirements.txt

@@ -7,7 +7,7 @@ gym
 matplotlib
 ml_collections
 numpy<1.23  # Needed by Ray because it uses `np.bool`.
-ray[rllib,default]==2.0.0
+ray[rllib,default]==2.5.1
 stable_baselines3
 supersuit>=3.7.2
 torch