Bump serde_with from 3.20.0 to 3.21.0 in the all group (#150)

Bumps the all group with 1 update: [serde_with](https://github.com/jonasbb/serde_with).


Updates `serde_with` from 3.20.0 to 3.21.0
- [Release notes](https://github.com/jonasbb/serde_with/releases)
- [Commits](jonasbb/serde_with@v3.20.0...v3.21.0)

---
updated-dependencies:
- dependency-name: serde_with
  dependency-version: 3.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

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

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ hashbrown = { version = "0.17", features = ["serde"] }
 ldap3_proto = { version = "0.7.1", features = ["serde"] }
 rustls = "0.23.40"
 serde = { version = "^1.0.228", features = ["derive"] }
-serde_with = { version = "3.20.0", features = ["macros"] }
+serde_with = { version = "3.21.0", features = ["macros"] }
 tokio = { version = "^1.52.3", features = ["rt", "rt-multi-thread", "macros", "net", "signal", "io-util"] }
 tokio-rustls = "0.26.4"
 tokio-util = { version = "^0.7.18", features = ["codec"] }