Update wiremock requirement from 0.5.3 to 0.6.0

Updates the requirements on [wiremock](https://github.com/LukeMathWalker/wiremock-rs) to permit the latest version.
- [Changelog](https://github.com/LukeMathWalker/wiremock-rs/blob/main/CHANGELOG.md)
- [Commits](LukeMathWalker/wiremock-rs@v0.5.3...v0.6.0)

---
updated-dependencies:
- dependency-name: wiremock
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -61,7 +61,7 @@ tokio = { version = "1.17.0", default-features = false, features = [
     "time",
 ] }
 tokio-test = "0.4.2"
-wiremock = "0.5.3"
+wiremock = "0.6.0"
 crypto_box = { version = "0.8.2", features = ["seal"] }
 base64 = "0.21.2"
 pretty_assertions = "1.4.0"