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[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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

Additional details and impacted files

```diff @@ 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](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | Coverage Δ | | |---|---|---| | [Linux](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | `49.27% <ø> (-0.38%)` | :arrow_down: | | [macOS](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | `49.27% <ø> (?)` | | | [python3.10](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | `49.27% <ø> (-0.38%)` | :arrow_down: | | [python3.11](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | `49.27% <ø> (-0.38%)` | :arrow_down: | | [python3.9](https://app.codecov.io/gh/gwpy/gwsumm/pull/414/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy) | `49.27% <ø> (-0.37%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gwpy#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.