chore: upgrade winreg to 0.56.0

Resolves RUSTSEC-2026-0037 indirectly — winreg 0.56.0 updates
windows-sys to 0.61.2, which is required by the safe quinn-proto version.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lwshang

Cargo.lock

@@ -104,7 +104,7 @@ tracing-subscriber = "0.3.20"
 url = { version = "2.5.4", features = ["serde"] }
 uuid = { version = "1.16.0", features = ["serde", "v4"] }
 wasmparser = "0.245.1"
-winreg = "0.55"
+winreg = "0.56.0"
 wslpath2 = "0.1"
 zeroize = "1.8.1"