Revert "Switch to Node.js 18.x (#21400)" (#21420)

This reverts commit 42f26f29dc.

.circleci/config.yml

@@ -278,7 +278,7 @@ references:
   docker-images:
     # These versions should try to match what we run in production.
     # Note that the cimg/python:3.10-node convenience image provides
-    # nodejs latest lts, which we need to build assets and run the linter.
+    # nodejs 16.x, which we need to build assets and run the linter.
     - &python "cimg/python:3.10-node"
     - &redis "redis:6.2"
     - &memcached "memcached:1.4"

docker/nodesource.list

@@ -1,2 +1,2 @@
-deb https://deb.nodesource.com/node_18.x buster main
-deb-src https://deb.nodesource.com/node_18.x buster main
+deb https://deb.nodesource.com/node_16.x buster main
+deb-src https://deb.nodesource.com/node_16.x buster main

package.json

@@ -3,7 +3,7 @@
   "version": "0.0.17",
   "private": true,
   "engines": {
-    "node": ">= 18.18"
+    "node": ">= 16.17"
   },
   "dependencies": {
     "@claviska/jquery-minicolors": "2.3.6",