chore(deps): update rust crate objc2 to 0.6

Author: renovate[bot]

crates/tauri-runtime-wry/Cargo.toml

@@ -46,7 +46,7 @@ webkit2gtk = { version = "=2.0", features = ["v2_40"] }
 percent-encoding = "2"
 
 [target.'cfg(target_vendor = "apple")'.dependencies]
-objc2 = "0.5"
+objc2 = "0.6"
 
 [target.'cfg(target_os = "macos")'.dependencies]
 objc2-foundation = { version = "0.2", features = [] }

crates/tauri/Cargo.toml

@@ -103,7 +103,7 @@ webkit2gtk = { version = "=2.0.1", features = ["v2_40"] }
 [target.'cfg(target_os = "macos")'.dependencies]
 embed_plist = "1.2"
 plist = "1"
-objc2 = "0.5"
+objc2 = "0.6"
 objc2-foundation = { version = "0.2", default-features = false, features = [
   "std",
   "NSData",