Update dependency safety to v2.3.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
safety	==2.1.1 -> ==2.3.1

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Release Notes

pyupio/safety

v2.3.1

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• Add safety.alerts module to setup.cfg

v2.3.0

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• Safety can now create GitHub PRs and Issues for vulnerabilities directly, with the new safety alert subcommand.
• Support for GitHub PR and Issue alerting has been added to the GitHub Action.

v2.2.1

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• Fixed the use of the SAFETY_COLOR environment variable
• Fixed bug in the case of vulnerabilities without a CVE linked
• Fixed GitHub version in the README

v2.2.0

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• Safety starts to use dparse to parse files, now Safety supports mainly Poetry and Pipenv lock files plus other files supported by dparse.
• Added logic for custom integrations like pipenv check.
• The --db flag is compatible remote sources too.
• Added more logging
• Upgrade dparse dependency to avoid a possible ReDos security issue
• Removed Travis and Appveyor, the CI/CD was migrated to GitHub Actions

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