build(deps): bump lru from 0.16.2 to 0.16.3 in /bindings/ruby

Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.16.2 to 0.16.3.
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](jeromefroe/lru-rs@0.16.2...0.16.3)

---
updated-dependencies:
- dependency-name: lru
  dependency-version: 0.16.3
  dependency-type: indirect
...

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

Author: dependabot[bot]