Update pyproject.toml: constrain numpy<2

[james-pcdr]

Hello,

I got the following error when trying to use send:

  File ".../amodem/amodem/common.py", line 31, in dumps
    return sym.astype('int16').tostring()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'numpy.ndarray' object has no attribute 'tostring'

When I installed numpy 1.x rather than 2.x, it seemed to fix it.

Please let me know if you would like any further information. Thanks!

[romanz]

Thanks!
Could you please remove the unsupported Python versions (3.7 & 3.8) from:

amodem/.github/workflows/build.yml

Line 15 in ed49192

python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]

[james-pcdr]

Sure. I figured you wanted it all in one commit, so I started a new PR, #89.
Let me know if you have any other requests. 👍

[romanz]

Thanks!