Update werkzeug requirement from <1.0 to <4.0

Updates the requirements on [werkzeug](https://github.com/pallets/werkzeug) to permit the latest version.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/main/CHANGES.rst)
- [Commits](pallets/werkzeug@0.1...3.1.3)

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

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

requirements.txt

@@ -7,7 +7,7 @@ psutil>=5.5,<5.6  # https://github.com/giampaolo/psutil/blob/master/HISTORY.rst
 requests==2.32.3  # https://pypi.python.org/pypi/requests
 gevent==23.9.0.post1  # http://www.gevent.org/changelog.html
 greenlet>=3.0rc1
-werkzeug<1.0 # https://github.com/pallets/werkzeug/blob/master/CHANGES
+werkzeug<4.0 # https://github.com/pallets/werkzeug/blob/master/CHANGES
 backports.ssl-match-hostname==3.7.0.1 # required by tornado<5.0
 patool>=1.12,<3.1  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
 bcrypt>=3.1,<4.3  # https://github.com/pyca/bcrypt/