Bump cvxpy from 1.5.3 to 1.6.0 in /requirements

Bumps [cvxpy](https://github.com/cvxpy/cvxpy) from 1.5.3 to 1.6.0.
- [Release notes](https://github.com/cvxpy/cvxpy/releases)
- [Commits](cvxpy/cvxpy@v1.5.3...v1.6.0)

---
updated-dependencies:
- dependency-name: cvxpy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/requirements.txt

@@ -1,7 +1,7 @@
 numpy == 2.2.0
 scipy == 1.14.1
 matplotlib == 3.9.3
-cvxpy == 1.5.3
+cvxpy == 1.6.0
 pytest == 8.3.4 # For unit test
 pytest-xdist == 3.6.1 # For unit test
 mypy == 1.13.0 # For unit test