Update pin on cvxpy version

[lauramurgatroyd]

Description

Now that conda-forge/cvxpy-feedstock#125 has been merged, the new cvxpy versions which only work with numpy 2 and above, should have the appropriate requirement of numpy version, so we shouldn't have to pin the cvxpy version.
However, as a release of cvxpy = 1.8.2 exists without the correct numpy pin, we can't use that version.

We will need a separate PR to address https://github.com/TomographicImaging/CIL/ , after we support numpy2 : #2305

Example Usage

Contribution Notes

• The content of this Pull Request (the Contribution) is intentionally submitted for inclusion in CIL (the Work) under the terms and conditions of the Apache-2.0 License
• I confirm that the contribution does not violate any intellectual property rights of third parties

Changes

Testing you performed

Please add any demo scripts to https://github.com/TomographicImaging/CIL-Demos/tree/main/misc

Trying to run all tests at: https://github.com/TomographicImaging/CIL/actions/runs/24447602072

Related issues/links

Checklist

• I have performed a self-review of my code
• I have added docstrings in line with the guidance in the developer guide
• I have updated the relevant documentation
• I have implemented unit tests that cover any new or modified functionality
• CHANGELOG.md has been updated with any functionality change
• Request review from all relevant developers

[lauramurgatroyd]

Hi @casperdcl do you think we'd have to patch the metadata of existing cvxpy releases to get this working, as suggested in this comment?
conda-forge/cvxpy-feedstock#125 (comment)

[casperdcl]

oddly, our CI seems to be picking up conda-forge::cvxpy=1.8.2=py*_0 instead of conda-forge::cvxpy=1.8.2=py*_1.

[casperdcl]

ah of course, it'll see cvxpy=1.8.2=*_1 is incompatible with numpy<2 so will use the borked cvxpy=1.8.2=*_0 instead.

I suppose we need to have cvxpy!=1.8.2 in our conda environments at least until #2218 . pip requirements need no constraints.

[lauramurgatroyd]

Ok, I'll update to: cvxpy!=1.8.2

[lauramurgatroyd]

It should be fine but I tried to run all tests but can't due to this issue: #2308 (comment)

https://github.com/TomographicImaging/CIL/actions/runs/24447602072