Update mypy requirement from ~=1.9.0 to >=1.9,<1.19

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@1.9.0...v1.18.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -48,7 +48,7 @@ Issues = "https://github.com/atlanhq/atlan-python/issues"
 
 [dependency-groups]
 dev = [
-    "mypy~=1.9.0",
+    "mypy>=1.9,<1.19",
     "ruff~=0.12.8",
     "types-requests~=2.31.0.6",
     "types-setuptools~=75.8.0.20250110",