chore: cache png icons forever to lower vercel costs

bin/build-vercel-json.js

@@ -44,7 +44,13 @@ const JSON_TEMPLATE = {
       }
     },
     {
-      src: '^/.*\\.(png|css|json|svg|jpe?g|map|txt|gz|webapp|woff|woff2)$',
+      src: '^/.*\\.(png|jpe?g)$',
+      headers: {
+        'cache-control': 'public,max-age=31536000,immutable'
+      }
+    },
+    {
+      src: '^/.*\\.(css|json|svg|map|txt|gz|webapp|woff|woff2)$',
       headers: {
         'cache-control': 'public,max-age=3600'
       }

package.json

@@ -4,7 +4,7 @@
   "version": "2.6.0",
   "type": "module",
   "engines": {
-    "node": "^12.20.0 || ^14.13.1 || ^16.0.0 || ^18.0.0"
+    "node": "^12.20.0 || ^14.13.1 || ^16.0.0 || ^18.0.0 || ^20.0.0"
   },
   "scripts": {
     "lint": "standard && standard --plugin html 'src/routes/**/*.html'",

vercel.json

@@ -29,7 +29,13 @@
       }
     },
     {
-      "src": "^/.*\\.(png|css|json|svg|jpe?g|map|txt|gz|webapp|woff|woff2)$",
+      "src": "^/.*\\.(png|jpe?g)$",
+      "headers": {
+        "cache-control": "public,max-age=31536000,immutable"
+      }
+    },
+    {
+      "src": "^/.*\\.(css|json|svg|map|txt|gz|webapp|woff|woff2)$",
       "headers": {
         "cache-control": "public,max-age=3600"
       }