Test time zone canonicalization against ICU4X (#676)

Currently there's a CLDR file that's checked in - getting this data from
ICU4X is both easier, and will stay up to date.

Author: robertbastian

Cargo.lock

@@ -25,8 +25,6 @@ exclude = [
     "CONTRIBUTING.md",
     "cliff.toml",
     "tests/data/zoneinfo64.res",
-    # Under a different license
-    "provider/src/tzdb/cldr-timezone.xml",
 ]
 
 [workspace.dependencies]

Cargo.toml

@@ -75,8 +75,7 @@ yoke = { version = "0.8.0", features = ["derive"], optional = true }
 serde_json = { version = "1.0.145", optional = true }
 
 [dev-dependencies]
-serde-xml-rs = "0.8.1"
-serde = { version = "1.0.225" , features = ["derive"] }
+icu_time = { version = "2", features = ["compiled_data"] }
 
 [package.metadata.docs.rs]
 all-features = true