Update to casadi 3.6.4 for Windows wheels

[agriyakhetarpal]

Description

See #3193 and #3100. The pybamm-team/casadi-vcpkg-registry has been updated to use casadi==3.6.4 for linkage in the Windows wheels. We should ensure that the version of casadi used for IDAKLU compilation remains the same across platforms and architectures, for which #3603 has been opened.

The wheels have been built with this update earlier on my fork and had passed as noted in #3100. The issue has been noted to be fixed for the Windows wheels with this change.

Fixes #3100

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ python run-tests.py --quick (or $ nox -s quick).

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7e72c38) 99.59% compared to head (c14ed01) 99.59%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3637   +/-   ##
========================================
  Coverage    99.59%   99.59%           
========================================
  Files          258      258           
  Lines        20797    20797           
========================================
  Hits         20712    20712           
  Misses          85       85           

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[Saransh-cpp]

Looks good, thanks @agriyakhetarpal!