chore(deps): update mypy requirement from <=1.17.1 to <=1.18.2

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v0.1.0...v1.18.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements/testing.txt

@@ -15,7 +15,7 @@ psutil>=6.0.0,<8
 boto3<=2
 # For AWS tests
 moto>=4.0.13,<6
-mypy<=1.17.1
+mypy<=1.18.2
 # For AsyncSQLAlchemy tests
 greenlet<=4
 aiosqlite<=1