Bump types-pyyaml from 6.0.12.20250822 to 6.0.12.20250915

Bumps [types-pyyaml](https://github.com/typeshed-internal/stub_uploader) from 6.0.12.20250822 to 6.0.12.20250915.
- [Commits](https://github.com/typeshed-internal/stub_uploader/commits)

---
updated-dependencies:
- dependency-name: types-pyyaml
  dependency-version: 6.0.12.20250915
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -69,7 +69,7 @@ optional-dependencies.dev = [
     "sphinx-pyproject==0.3.0",
     "sphinx-substitution-extensions==2025.6.6",
     "sphinxcontrib-spelling==8.0.1",
-    "types-pyyaml==6.0.12.20250822",
+    "types-pyyaml==6.0.12.20250915",
     "vulture==2.14",
     "yamlfix==1.18.0",
 ]