chore(deps): update icu_locale_core requirement in /tests/fuzz

Updates the requirements on [icu_locale_core](https://github.com/unicode-org/icu4x) to permit the latest version.
- [Release notes](https://github.com/unicode-org/icu4x/releases)
- [Changelog](https://github.com/unicode-org/icu4x/blob/main/CHANGELOG.md)
- [Commits](https://github.com/unicode-org/icu4x/commits/icu@2.2.0)

---
updated-dependencies:
- dependency-name: icu_locale_core
  dependency-version: 2.2.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -152,7 +152,7 @@ async-channel = "2.5.0"
 
 icu_provider = { version = "~2.1.1", default-features = false }
 icu_locale = { version = "~2.1.1", default-features = false }
-icu_locale_core = { version = "~2.1.1", default-features = false }
+icu_locale_core = { version = "~2.2.0", default-features = false }
 icu_datetime = { version = "~2.1.1", default-features = false }
 icu_time = { version = "~2.1.1", default-features = false }
 icu_calendar = { version = "~2.1.1", default-features = false }