chore: Bump types-grpcio in /sdks/python

Bumps [types-grpcio](https://github.com/python/typeshed) from 1.0.0.20251009 to 1.0.0.20260614.
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: types-grpcio
  dependency-version: 1.0.0.20260614
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

sdks/python/poetry.lock

@@ -46,7 +46,7 @@ lint = [
     "ruff==0.15.10",
     "types-requests>=2.33.0.20260518",
     "psutil>=6.0.0",
-    "types-grpcio>=1.0.0",
+    "types-grpcio>=1.0.0.20260614",
 ]
 
 test = [