Bump lru from 0.7.8 to 0.8.1

Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.7.8 to 0.8.1.
- [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/0.7.8...0.8.1)

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

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

Cargo.lock

@@ -766,9 +766,9 @@ dependencies = [
 
 [[package]]
 name = "lru"
-version = "0.7.8"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999beba7b6e8345721bd280141ed958096a2e4abdf74f67ff4ce49b4b54e47a"
+checksum = "b6e8aaa3f231bb4bd57b84b2d5dc3ae7f350265df8aa96492e0bc394a1571909"
 dependencies = [
  "hashbrown",
 ]

Cargo.toml

@@ -40,7 +40,7 @@ sqlite = "0.26.0"
 uuid = { version = "1.1.2", features = ["serde", "v4"] }
 mio = { version = "0.8.4", features = ["os-poll", "net"] }
 ureq = { version = "2.5", optional = true }
-lru = "0.7.8"
+lru = "0.8.1"
 derive_more = "0.99.17"
 lazy_static = "1.4.0"