fontique: Update to objc2 0.6 and new CoreFoundation bindings

The `objc2` family of crates now provides bindings for CoreFoundation
and CoreText (and much more), so we can use these rather than the
old `core-foundation` and `core-text` crates.

This also simplifies some of the code. One simplification assumes
that `CTFontCreateUIFontForLanguage` won't fail.

Author: waywardmonkeys

Cargo.lock

@@ -25,7 +25,7 @@ unicode_script = ["dep:unicode-script"]
 system = [
 	"std",
 	"dep:windows", "dep:windows-core",
-	"dep:core-text", "dep:core-foundation", "dep:objc2", "dep:objc2-foundation",
+	"dep:objc2-core-text", "dep:objc2-core-foundation", "dep:objc2-foundation",
 	"dep:fontconfig-cache-parser", "dep:roxmltree",
 ]
 
@@ -46,10 +46,9 @@ windows = { version = "0.58.0", features = ["implement", "Win32_Graphics_DirectW
 windows-core = { version = "0.58", optional = true }
 
 [target.'cfg(target_vendor = "apple")'.dependencies]
-core-text = { version = "20.1.0", optional = true }
-core-foundation = { version = "0.9.4", optional = true }
-objc2 = { version = "0.5.2", optional = true }
-objc2-foundation = { version = "0.2.2", features = ["NSArray", "NSEnumerator", "NSPathUtilities", "NSString"], optional = true }
+objc2-foundation = { version = "0.3.0", optional = true, default-features = false, features = ["alloc", "NSArray", "NSEnumerator", "NSPathUtilities", "NSString"] }
+objc2-core-foundation = { version = "0.3.0", optional = true, default-features = false, features = ["CFBase"]  }
+objc2-core-text = { version = "0.3.0", optional = true }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 fontconfig-cache-parser = { version = "0.2.0", optional = true }