Bump Version for ep_prometheus to 0.0.22

Author: github-actions[bot]

ep_prometheus/package.json

@@ -26,7 +26,7 @@
     "type": "git",
     "url": "https://github.com/ether/ether-plugins.git"
   },
-  "version": "0.0.21",
+  "version": "0.0.22",
   "devDependencies": {
     "eslint": "catalog:",
     "eslint-config-etherpad": "catalog:",