fix(deps): move webview2-com to 0.39 and windows to 0.62 to match wry 0.57

The Tauri update brought wry 0.57, which uses webview2-com 0.39 / windows
0.62. Our Windows-only permission handler (lib.rs) still used webview2-com
0.38, so its handler type did not satisfy wry's ICoreWebView2 bound (E0277
on the Windows build).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src-tauri/Cargo.toml

@@ -55,9 +55,9 @@ webkit2gtk = "2.0"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 keyring = { version = "3.6", features = ["windows-native"] }
-webview2-com = "0.38"
+webview2-com = "0.39"
 window-vibrancy = "0.6"
-windows = { version = "0.61", features = [
+windows = { version = "0.62", features = [
     # WinRT namespaces
     "Data_Xml_Dom",         # P5-41 toast XML
     "Foundation",