chore(deps): bump werkzeug (GoogleCloudPlatform#11665)

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 2.3.7 to 3.0.3.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@2.3.7...3.0.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

appengine/flexible_python37_and_earlier/datastore/requirements.txt

@@ -2,4 +2,4 @@ Flask==3.0.0; python_version > '3.6'
 Flask==2.0.3; python_version < '3.7'
 google-cloud-datastore==2.15.2
 gunicorn==22.0.0
-Werkzeug==2.3.7
+Werkzeug==3.0.3