Bump lru from 0.7.2 to 0.7.3 (#5008)

Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.7.2 to 0.7.3.
- [Release notes](https://github.com/jeromefroe/lru-rs/releases)
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jeromefroe/lru-rs/compare/0.7.2...0.7.3)

---
updated-dependencies:
- dependency-name: lru
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

polkadot/node/core/dispute-coordinator/Cargo.toml

@@ -10,7 +10,7 @@ tracing = "0.1.31"
 parity-scale-codec = "3.0.0"
 kvdb = "0.11.0"
 thiserror = "1.0.30"
-lru = "0.7.2"
+lru = "0.7.3"
 fatality = "0.0.6"
 
 polkadot-primitives = { path = "../../../primitives" }