Bump werkzeug from 0.14.1 to 0.15.3 (#2)

Bumps [werkzeug](https://github.com/pallets/werkzeug) from 0.14.1 to 0.15.3.
- [Release notes](https://github.com/pallets/werkzeug/releases)
- [Changelog](https://github.com/pallets/werkzeug/blob/master/CHANGES.rst)
- [Commits](https://github.com/pallets/werkzeug/compare/0.14.1...0.15.3)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Santiago Lamora <santiago@ribaguifi.com>

requirements.txt

@@ -27,7 +27,7 @@ SQLAlchemy==1.2.17
 SQLAlchemy-Utils==0.33.11
 teal==0.2.0a38
 webargs==4.0.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 sqlalchemy-citext==1.3.post0
 flask-weasyprint==0.5
 weasyprint==44