chore(deps): Bump lru from 0.17.0 to 0.18.0 (#171)

Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.17.0 to 0.18.0.
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jeromefroe/lru-rs/compare/0.17.0...0.18.0)

---
updated-dependencies:
- dependency-name: lru
  dependency-version: 0.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

filtermail/Cargo.lock

@@ -1279,9 +1279,9 @@ checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
 [[package]]
 name = "lru"
-version = "0.17.0"
+version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e0b564323a0fb6d54b864f625ae139de9612e27edb944dda37c109f05aac531"
+checksum = "8a860605968fce16869fd239cf4237a82f3ac470723415db603b0e8b6c8d4fb9"
 dependencies = [
  "hashbrown 0.17.0",
 ]

filtermail/Cargo.toml

@@ -25,7 +25,7 @@ governor = { version = "0.10.4", default-features = false, features = [
 ] }
 viadkim = { version = "0.2.0" }
 hickory-resolver = { version = "0.26.1", features = ["dnssec-ring"] }
-lru = "0.17.0"
+lru = "0.18.0"
 parking_lot = "0.12.5"
 tokio-rustls = { version = "0.26.4", default-features = false, features = [
   "ring",