Update chrono dependency

[Pleto]

Issue #, if available: None

Description of changes: Chrono package is no longer maintained and it's marked as having a security vulnerability. I replaced it with time since it's still active and offers the same API as chrono

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[petreeftime]

Please don't include tags such as [chore] in the commit name. Also, try to make commits atomic. If you update Cargo.toml, you also need to update Cargo.lock and the license files in the same commit.