chore(deps): bump werkzeug in /tests/apps/python-flask

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 0.16.1 to 1.0.0.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/master/CHANGES.rst)
- [Commits](pallets/werkzeug@0.16.1...1.0.0)

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

tests/apps/python-flask/requirements.txt

@@ -1,5 +1,5 @@
 Flask==1.1.1
 Jinja2==2.11.1
-Werkzeug==0.16.1
+Werkzeug==1.0.0
 gunicorn==20.0.4