build: upgrade simplewebauthn packages from v9 to v13 (#2389)

The v9 packages are deprecated. This updates to v13 which includes
breaking API changes: optionsJSON wrapper for auth functions,
renamed properties (authenticator→credential), and base64 encoding
for credential IDs via isoBase64URL helper.

packages/auth/package.json

@@ -15,6 +15,7 @@
     "@hono/standard-validator": "^0.2.0",
     "@oslojs/crypto": "^1.0.1",
     "@oslojs/encoding": "^1.1.0",
+    "@simplewebauthn/server": "^13.2.2",
     "arctic": "^3.7.0",
     "hono": "4.10.6",
     "luxon": "^3.7.2",
@@ -22,4 +23,4 @@
     "ts-pattern": "^5.9.0",
     "zod": "^3.25.76"
   }
-}
+}