Try builds against SUNDIALS v7.7

[c-randall]

Description

SUNDIALS v7.7.0 was released and built on conda-forge. The new conda builds use GitHub actions for the Linux distributions instead of Azure and the maintainers removed the DBLA_VENDOR=Generic option, which was originally required so that builds used the BLAS and LAPACK libraries from the conda environment and not the defaults on the Linux build systems. Despite removing this option, builds seem to be okay for compiling against in scikit-sundae. This is likely because building the GitHub runners do not encounter the same issue as the Azure runners finding the BLAS and LAPACK libraries.

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that improves speed/readability/etc.)
• Bug fix (non-breaking change which fixes an issue)
• Chore (any other clean up, maintenance, etc.)

Key checklist

• No style issues: $ nox -s linter [-- format]
• Code is free of misspellings: $ nox -s codespell [-- write]
• All tests pass: $ nox -s tests
• Badges are updated: $ nox -s badges

Further checks:

• The documentation builds: $ nox -s docs.
• Code is commented, particularly in hard-to-understand areas.
• Tests are added that prove fix is effective or that feature works.