Make minimum supported node version 18

Author: airhorns

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x]
         os: [ubuntu-latest]
 
     steps:

packages/fastify-renderer/package.json

@@ -54,7 +54,7 @@
     "url": "https://github.com/fastify/fastify-renderer/issues"
   },
   "engines": {
-    "node": ">= 12.0.0"
+    "node": ">= 18.0.0"
   },
   "dependencies": {
     "@opentelemetry/api": "^1.6.0",