Bump async-trait from 0.1.80 to 0.1.81

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.80 to 0.1.81.
- [Release notes](https://github.com/dtolnay/async-trait/releases)
- [Commits](dtolnay/async-trait@0.1.80...0.1.81)

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

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

Cargo.toml

@@ -11,7 +11,7 @@ repository = "https://github.com/e-identification/bankid-rs"
 keywords = ["bankid", "api", "sdk"]
 
 [dependencies]
-async-trait = { version = "0.1.80", optional = true }
+async-trait = { version = "0.1.81", optional = true }
 base64 = "0.22.1"
 derive_builder = "0.20.0"
 maybe-async = "0.2.10"