Update did-key-related dev deps.

package.json

@@ -30,8 +30,9 @@
   },
   "devDependencies": {
     "@digitalbazaar/did-io": "^2.0.0",
-    "@digitalbazaar/did-method-key": "^3.0.0",
-    "@digitalbazaar/ed25519-signature-2020": "^4.0.1",
+    "@digitalbazaar/did-method-key": "^5.1.0",
+    "@digitalbazaar/ed25519-signature-2020": "^5.2.0",
+    "@digitalbazaar/ed25519-verification-key-2020": "^4.1.0",
     "@digitalbazaar/vc": "^6.2.0",
     "age-verification-context": "^5.0.0",
     "c8": "^8.0.1",

test/loader.js

@@ -1,20 +1,18 @@
 /*!
  * Copyright (c) 2021-2023 Digital Bazaar, Inc. All rights reserved.
  */
-import * as didKey from '@digitalbazaar/did-method-key';
 import ageContext from 'age-verification-context';
 import {CachedResolver} from '@digitalbazaar/did-io';
 import citContext from 'cit-context';
 import cred from 'credentials-context';
 import didContext from 'did-context';
+import {driver} from '@digitalbazaar/did-method-key';
 import ed25519 from 'ed25519-signature-2020-context';
+import {Ed25519VerificationKey2020} from
+  '@digitalbazaar/ed25519-verification-key-2020';
 import {JsonLdDocumentLoader} from 'jsonld-document-loader';
 import x25519 from 'x25519-key-agreement-2020-context';
 
-const didKeyDriver = didKey.driver();
-const resolver = new CachedResolver();
-resolver.use(didKeyDriver);
-
 const {contexts: credentialsContext, constants: {CREDENTIALS_CONTEXT_V1_URL}} =
   cred;
 
@@ -36,7 +34,13 @@ staticLoader.addStatic(didContext.constants.DID_CONTEXT_URL,
 staticLoader.addStatic(CREDENTIALS_CONTEXT_V1_URL,
   credentialsContext.get(CREDENTIALS_CONTEXT_V1_URL));
 
+const resolver = new CachedResolver();
+const didKeyDriver = driver();
+didKeyDriver.use({
+  multibaseMultikeyHeader: 'z6Mk',
+  fromMultibase: Ed25519VerificationKey2020.from
+});
+resolver.use(didKeyDriver);
 staticLoader.setDidResolver(resolver);
 
 export const documentLoader = staticLoader.documentLoader.bind(staticLoader);
-