chore(deps): Bump tokio from 1.51.1 to 1.52.1 (#135)

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.51.1 to 1.52.1.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.51.1...tokio-1.52.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.52.1
  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

@@ -1930,9 +1930,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.51.1"
+version = "1.52.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f66bf9585cda4b724d3e78ab34b73fb2bbaba9011b9bfdf69dc836382ea13b8c"
+checksum = "b67dee974fe86fd92cc45b7a95fdd2f99a36a6d7b0d431a231178d3d670bbcc6"
 dependencies = [
  "bytes",
  "libc",

filtermail/Cargo.toml

@@ -13,7 +13,7 @@ async-trait = "0.1.89"
 base64 = "0.22.1"
 serde = { version = "1.0.228", features = ["derive"] }
 serini = "0.2.2"
-tokio = { version = "1.51.0", features = ["full"] }
+tokio = { version = "1.52.1", features = ["full"] }
 thiserror = "2.0.18"
 mailparse = "0.16.1"
 log = "0.4.29"