Bump werkzeug from 3.1.5 to 3.1.6 in /src/mcp_server

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.1.5 to 3.1.6.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.1.5...3.1.6)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.6
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/mcp_server/pyproject.toml

@@ -23,7 +23,7 @@ dependencies = [
   "pydantic-settings==2.6.1",
   "python-multipart==0.0.22",
   "httpx==0.28.1",
-  "werkzeug==3.1.5",
+  "werkzeug==3.1.6",
   "urllib3==2.6.3",
   "azure-core==1.38.0",
   "cryptography==46.0.5",