chore(deps): update node.js to v20.20.0

Author: renovate[bot]

.functions/package-lock.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "description": "SSR for Storefront on Firebase with Cloud Functions",
   "engines": {
-    "node": "20"
+    "node": "20.20.0"
   },
   "main": "index.js",
   "dependencies": {

.functions/package.json

@@ -1 +1 @@
-20
+20.20.0

.nvmrc

@@ -6,7 +6,7 @@
     "not ie_mob 11"
   ],
   "engines": {
-    "node": "20"
+    "node": "20.20.0"
   },
   "private": true,
   "name": "@ecomplus/storefront",