Bump webtest from 2.0.29 to 2.0.30 in /{{cookiecutter.app_name}}

Bumps [webtest](https://github.com/Pylons/webtest) from 2.0.29 to 2.0.30.
- [Release notes](https://github.com/Pylons/webtest/releases)
- [Commits](https://github.com/Pylons/webtest/compare/2.0.29...2.0.30)

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

{{cookiecutter.app_name}}/Pipfile

@@ -46,7 +46,7 @@ environs = "==4.0.0"
 [dev-packages]
 # Testing
 pytest = "==3.6.1"
-WebTest = "==2.0.29"
+WebTest = "==2.0.30"
 factory-boy = "==2.11.*"
 
 # Lint and code style