Modify the upstream TypeScript types by marking authenticatorAttachment as optional on PublicKeyCredential for now.

This means that a `PublicKeyCredentialWithClientExtensionResults` is no
longer a subtype of the version of `PublicKeyCredential` in the latest
version of TypeScript, but `webauthn-json` will be forwards and
backwards compatible with TypeScript (i.e. without compilation errors)
for now.

See:
- Typescript 4.9.4: Types of property 'authenticatorAttachment' are incompatible #73 (comment)
- `authenticatorAttachment` field on `PublicKeyCredential` is incompatible with Firefox microsoft/TypeScript-DOM-lib-generator#1477

Author: lgarron

package-lock.json

@@ -38,7 +38,7 @@
     "jest-environment-jsdom": "^29.2.2",
     "rome": "^10.0.1",
     "ts-jest": "^29.0.3",
-    "typescript": "^4.8.4"
+    "typescript": "^4.9.4"
   },
   "scripts": {
     "build": "npm run build-js && npm run build-types",

package.json

@@ -13,8 +13,12 @@ interface AuthenticationExtensionsClientOutputsJSON
   credProps?: CredPropsAuthenticationExtensionsClientOutputsJSON;
 }
 
+type PublicKeyCredentialWithOptionalAuthenticatorAttachment =
+  Partial<PublicKeyCredential> &
+    Omit<PublicKeyCredential, "authenticatorAttachment">;
+
 export interface PublicKeyCredentialWithClientExtensionResults
-  extends PublicKeyCredential {
+  extends PublicKeyCredentialWithOptionalAuthenticatorAttachment {
   authenticatorAttachment?: string | null;
   clientExtensionResults?: AuthenticationExtensionsClientOutputsJSON;
 }