fix: upgrade @web5/credentials from 0.3.2 to 0.4.0

Snyk has created this PR to upgrade @web5/credentials from 0.3.2 to 0.4.0.

See this package in npm:
https://www.npmjs.com/package/@web5/credentials

See this project in Snyk:
https://app.snyk.io/org/tbd-6SAcHiSN8b6KuSa8aircTh/project/63f9c3d8-a58a-4a16-9258-d71d8499c441?utm_source=github&utm_medium=referral&page=upgrade-pr

packages/protocol/package.json

@@ -51,7 +51,7 @@
   "dependencies": {
     "@noble/hashes": "1.3.2",
     "@web5/common": "0.2.1",
-    "@web5/credentials": "0.3.2",
+    "@web5/credentials": "0.4.0",
     "@web5/crypto": "0.2.2",
     "@web5/dids": "0.2.2",
     "ajv": "8.12.0",