Update ICU4X to 2.2 (#705)

This works but I want to do a more thorough check

Author: Manishearth

Cargo.lock

@@ -12,7 +12,7 @@ members = [
 [workspace.package]
 edition = "2021"
 version = "0.2.1"
-rust-version = "1.83.0"
+rust-version = "1.86.0"
 authors = ["boa-dev"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/boa-dev/temporal"
@@ -45,7 +45,7 @@ web-time = "1.1.0"
 
 # ICU4X
 tinystr = "0.8.0"
-icu_calendar = { version = "~2.1.0", default-features = false, features = ["unstable"] }
+icu_calendar = { version = "2.2.0", default-features = false }
 icu_locale_core = "2.1.0"
 zerovec = "0.11.0"
 databake = "0.2.0"
@@ -93,6 +93,7 @@ timezone_provider = { workspace = true }
 # System time feature
 web-time = { workspace = true, optional = true }
 iana-time-zone = { workspace = true, optional = true }
+calendrical_calculations = "0.2.4"
 
 [dev-dependencies]
 timezone_provider = { workspace = true, features = ["zoneinfo64", "experimental_tzif"] }