Jan 2026 dependencies bump

[mpharrigan]

• bump dependencies to latest versions that form a mutually-compatible set with pip-compile.
• Latest sympy no longer re-exports the symbols we use in sympy_to_proto.py, so I added the imports.
• Mypy/Numpy is getting pickier about NDArary[cirq.Qid] and friends. Added # type: ignore and opened NDArray[MyObject] type annotations are not allowed #1789 to track longer-term fix

[mpharrigan]

Opened #1789 to track the growing complaints with e.g. NDArray[cirq.Qid] in type annotations

[mhucka]

This looks overall okay, but it seems to mix multiple kinds of changes into one PR:

1. Dependency version updates in the various requirements files
2. Addition of type annotations
3. In the case of qualtran/serialization/sympy_to_proto.py, addition of imports

It's not immediately clear whether these are actually related and need to be in the same PR. If they do need to be in the same CL, could the reasons be explained in the PR description?

Conversely, if they don't need to be in the same CL, I would recommend following the principle of small CLs (https://google.github.io/eng-practices/review/developer/small-cls.html) and splitting this up into separate PRs.

(I hope this doesn't come across as too critical. Just trying to do a good review.)

[mpharrigan]

should have noted that those changes are in response to new mypy and pylint failures that only occur with the updated dependency versions. will update pr description

[mhucka]

LGTM