Bump werkzeug from 3.1.3 to 3.1.4 in /greeter

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 3.1.3 to 3.1.4.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@3.1.3...3.1.4)

---
updated-dependencies:
- dependency-name: werkzeug
  dependency-version: 3.1.4
  dependency-type: direct:production
...

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

Author: dependabot[bot]

greeter/requirements.txt

@@ -26,4 +26,4 @@ requests==2.31.0
 six==1.17.0
 tomlkit==0.13.3
 urllib3==2.5.0
-Werkzeug==3.1.3
+Werkzeug==3.1.4