Update jax requirement in the jax group

Updates the requirements on [jax](https://github.com/jax-ml/jax) to permit the latest version.

Updates `jax` to 0.4.38
- [Release notes](https://github.com/jax-ml/jax/releases)
- [Changelog](https://github.com/jax-ml/jax/blob/main/CHANGELOG.md)
- [Commits](jax-ml/jax@jax-v0.4.24...jax-v0.4.38)

---
updated-dependencies:
- dependency-name: jax
  dependency-type: direct:production
  dependency-group: jax
...

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

requirements.txt

@@ -1,4 +1,4 @@
-jax >= 0.4.24, != 0.4.36, <= 0.4.37
+jax >= 0.4.24, != 0.4.36, <= 0.4.38
 colorama <= 0.4.6
 diffrax >= 0.4.1, <= 0.6.1
 h5py >= 3.0.0, <= 3.12.1