Restrict scipy and numpy versions

[AdamOrmondroyd]

Description

Restrict scipy and numpy versions to <2.0.0.

numpy 2.0 is currently incompatible, therefore, I think it's silly to assume nothing will happen whenever scipy eventually gets a major change (not on the horizon, see https://github.com/scipy/scipy/wiki/SciPy-2.0:-ideas-for-changes-&-cleanups)

Fixes #389

Checklist:

• I have performed a self-review of my own code
• My code is PEP8 compliant (flake8 anesthetic tests)
• My code contains compliant docstrings (pydocstyle --convention=numpy anesthetic)
• New and existing unit tests pass locally with my changes (python -m pytest)
• I have added tests that prove my fix is effective or that my feature works
• I have appropriately incremented the semantic version number in both README.rst and anesthetic/_version.py

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@            Coverage Diff             @@
##             master      #390   +/-   ##
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  Coverage          ?   100.00%           
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  Files             ?        36           
  Lines             ?      3058           
  Branches          ?         0           
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  Hits              ?      3058           
  Misses            ?         0           
  Partials          ?         0           

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