Set upper bound on Numpy version (numpy = ">=1.10.1,<2.0.0"). Ref #493. (#494)

As discussed in #493, numpy v2.0.0 introduces a breaking change for
WFDB:
https://numpy.org/devdocs/numpy_2_0_migration_guide.html#changes-to-numpy-data-type-promotion.

This pull request sets an upper bound on the numpy version as a
temporary fix (`numpy = ">=1.10.1,<2.0.0"`).

Author: tompollard

pyproject.toml

@@ -11,7 +11,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = ">=3.7"
-numpy = ">=1.10.1"
+numpy = ">=1.10.1,<2.0.0"
 scipy = ">=1.0.0"
 pandas = ">=1.3.0"
 SoundFile = ">=0.10.0"