Bump lru to fix RUSTSEC-2021-0130 vulnerability

[ramosbugs]

Requirements

• [ ] I have added test coverage for new or changed functionality
• [X] I have followed the repository's pull request submission guidelines
• [ ] I have validated my changes against all supported platform versions

Related issues

None

Describe the solution you've provided

This PR bumps lru to address https://rustsec.org/advisories/RUSTSEC-2021-0130, which is fixed beginning in 0.7.2.

Describe alternatives you've considered

None

[keelerm84]

Thank you for the contribution. I will try to work on getting these changes brought into our internal development repository soon.

[keelerm84]

Thank you for your contribution. This has been resolved in 1.0.0-beta.3