Bump Version for ep_hash_auth to 3.0.21

Author: github-actions[bot]

ep_hash_auth/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ep_hash_auth",
-  "version": "3.0.20",
+  "version": "3.0.21",
   "description": "Allow the use of hashed passwords in etherpad-lite.",
   "main": "ep_hash_auth.js",
   "keywords": [
@@ -49,4 +49,4 @@
     "url": "https://github.com/ether/ether-plugins/issues"
   },
   "homepage": "https://github.com/ether/ether-plugins/tree/main/ep_hash_auth#readme"
-}
+}