Re-adding numpy 2+ support

[adamjstewart]

What does this PR do?

The ability to install torchmetrics with numpy 2 was removed in #2692 due to a dependency that does not yet support numpy 2. However, this dependency (PESQ) is optional, so there is no reason to prevent the base installation from using numpy 2.

@Borda

Before submitting

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

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📚 Documentation preview 📚: https://torchmetrics--2804.org.readthedocs.build/en/2804/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68%. Comparing base (d87aff7) to head (46a4354).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #2804    +/-   ##
=======================================
- Coverage      69%     68%    -0%     
=======================================
  Files         338     324    -14     
  Lines       18334   18164   -170     
=======================================
- Hits        12586   12417   -169     
+ Misses       5748    5747     -1