Bump pytest from 4.4.2 to 4.5.0 in /{{cookiecutter.app_name}}

Bumps [pytest](https://github.com/pytest-dev/pytest) from 4.4.2 to 4.5.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/4.4.2...4.5.0

)

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