Update CITATION.cff with new authors and version

[mgarnier59]

Before submitting, please check the following:

• Make sure you have tests for the new code and that test passes (run nox)
• If applicable, add a line to the [unreleased] part of CHANGELOG.md, following keep-a-changelog.
• Format added code by ruff
  • See CONTRIBUTING.md for more details
• Make sure the checks (github actions) pass.

Then, please fill in below:

Context (if applicable):

Description of the change:

Related issue:

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.06%. Comparing base (345ad59) to head (f95a00b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #470   +/-   ##
=======================================
  Coverage   89.06%   89.06%           
=======================================
  Files          44       44           
  Lines        6547     6547           
=======================================
  Hits         5831     5831           
  Misses        716      716           

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[matulni]

Thanks!