[MRG] Test Jax version in backend

[clbonet]

Types of changes

This PR fixes the test in the backend requiring that jax version must be more recent than "0.4.24".

Motivation and context / Related issue

Jax changed their numerotation of versions from "0.9.0" to "0.9.0.1", see https://github.com/jax-ml/jax/releases .

How has this been tested (if it applies)

PR checklist

• I have read the CONTRIBUTING document.
• The documentation is up-to-date with the changes I made (check build artifacts).
• All tests passed, and additional code has been covered with new tests.
• I have added the PR and Issue fix to the RELEASES.md file.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.76%. Comparing base (3ee4386) to head (a603a0d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #794   +/-   ##
=======================================
  Coverage   96.76%   96.76%           
=======================================
  Files         107      107           
  Lines       22249    22249           
=======================================
  Hits        21529    21529           
  Misses        720      720           

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