Unpin scipy with new gwpy pin

[duncanmmacleod]

This PR updates the project dependencies in pyproject.toml as follows

• remove max pin for scipy
• update pin for gwpy to require >= 3.0.9 (the version that works with scipy >= 1.14.0)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.27%. Comparing base (720bd0c) to head (6bf6f17).
Report is 13 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #414      +/-   ##
==========================================
- Coverage   49.64%   49.27%   -0.38%     
==========================================
  Files          60       60              
  Lines        8823     8789      -34     
==========================================
- Hits         4380     4330      -50     
- Misses       4443     4459      +16     

Flag	Coverage Δ
Linux	49.27% <ø> (-0.38%)	⬇️
macOS	49.27% <ø> (?)
python3.10	49.27% <ø> (-0.38%)	⬇️
python3.11	49.27% <ø> (-0.38%)	⬇️
python3.9	49.27% <ø> (-0.37%)	⬇️

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[eagoetz]

LGTM