[Security] Bump safety from 1.8.5 to 1.8.7

Bumps [safety](https://github.com/pyupio/safety) from 1.8.5 to 1.8.7. **This update includes a security fix.**
- [Release notes](https://github.com/pyupio/safety/releases)
- [Changelog](https://github.com/pyupio/safety/blob/master/HISTORY.rst)
- [Commits](pyupio/safety@1.8.5...1.8.7)

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