Bump mypy from 1.14.1 to 1.15.0 (#2032)

Bumps [mypy](https://github.com/python/mypy) from 1.14.1 to 1.15.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.14.1...v1.15.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -55,7 +55,7 @@ python = "^3.10"
 typing-extensions = ">=4.0,<5.0"
 pytest = { version = "^8.0", optional = true }
 hypothesis = { version = "^6.122", optional = true }
-mypy = { version = ">=1.12,<1.15", optional = true }
+mypy = { version = ">=1.12,<1.16", optional = true }
 
 [tool.poetry.group.dev.dependencies]
 anyio = "^4.3"