Types of changes

CVXPY changed its default solver (from ECOS to Clarabel), changing the mapping solvers to use the default CVXPY solver instead of asking for an old solver that is no longer installed by default

Motivation and context / Related issue

Fix #688

How has this been tested (if it applies)

Example + pytest

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.