chore(deps): update mypy requirement from ==1.* to ==2.*

[dependabot]

⚠️ Dependabot is rebasing this PR ⚠️

Rebasing might not happen immediately, so don't worry if this takes some time.

Note: if you make any changes to this PR yourself, they will take precedence over the rebase.

---

Updates the requirements on mypy to permit the latest version.

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 2.1

We’ve just uploaded mypy 2.1.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

librt.vecs: Fast Growable Array Type for Mypyc

The new librt.vecs module provides an efficient growable array type vec that is optimized for mypyc use. It provides fast, packed arrays with integer and floating point value types, which can be several times faster than list, and tens of times faster than array.array in code compiled using mypyc. It also supports nested vec objects and non-value-type items, such as vec[vec[str]].

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo.

librt.random: Fast Pseudo-Random Number Generation

The new librt.random module provides fast pseudo-random number generation that is optimized for code compiled using mypyc. It can be 3x to 10x faster than the stdlib random module in compiled code.

Refer to the documentation for the details.

Contributed by Jukka Lehtosalo (PR 21433).

Mypyc Improvements

• Enable incremental self-compilation (Vaggelis Danias, PR 21369)
• Make compilation order with multiple files consistent (Piotr Sawicki, PR 21419)
• Fix crash on accessing StopAsyncIteration (Piotr Sawicki, PR 21406)
• Fix incremental compilation with separate flag (Vaggelis Danias, PR 21299)

Fixes to Crashes

• Fix crash on partial type with --allow-redefinition and global declaration (Jukka Lehtosalo, PR 21428)
• Fix broken awaitable generator patching (Ivan Levkivskyi, PR 21435)

... (truncated)

Commits

• c1c336d Remove +dev from version
• 74df14b Add changelog for mypy 2.1 (#21464)
• 022d9bc Revert "TypeForm: Enable by default (#21262)"
• 8826288 [mypyc] Document librt.random (#21463)
• 3f4067b Bump librt version to 0.11.0 (#21458)
• 2b1eb58 [mypyc] Enable incremental self-compilation (#21369)
• 8152f4a Respect file config comments for stale modules (#21444)
• 116d60b Fix nondeterminism from nonassociativity of overload joins (#21455)
• 6c4af8e Fix function call message change for small number of args (#21432)
• 4b8fdca [mypyc] Add librt.random module (#21433)
• Additional commits viewable in compare view

[github-actions]

This bumps the mypy pin from 1.* to 2.*. Two concerns worth verifying:

1. Unsatisfiable pin risk. mypy has been on the 1.x line since 1.0.0 (Feb 2023) and I am not aware of a 2.x release existing on PyPI. If none exists, mypy == 2.* will fail to resolve and break pip install -r requirements-testing.txt (and CI) with a "No matching distribution" error. Please confirm a mypy 2.x has actually shipped.

2. Unpinned major bump. Even if 2.x exists, jumping across a major version with == 2.* (rather than a specific tested version) is likely to pull in stricter/changed type-checking behavior that can surface new errors in CI. Consider verifying the type checks still pass and pinning to the specific version you validated against.