Bump the dev-dependencies group with 2 updates

Bumps the dev-dependencies group with 2 updates: [ruff](https://github.com/astral-sh/ruff) and [mypy](https://github.com/python/mypy).


Updates `ruff` from 0.15.8 to 0.15.12
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.8...0.15.12)

Updates `mypy` from 1.20.0 to 1.20.2
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.20.0...v1.20.2)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: mypy
  dependency-version: 1.20.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -32,8 +32,8 @@ dev = [
     "pytest-cov>=7.0.0,<8",
     "pytest-mock>=3.15.1,<4",
     "coverage>=7.12.0,<8",
-    "ruff>=0.14.7,<0.16",
-    "mypy>=1.19.0,<2",
+    "ruff>=0.15.12,<0.16",
+    "mypy>=1.20.2,<2",
     "types-requests",
 ]