fix: require Node.js ^20.18.3

For JSON module support:
https://nodejs.org/api/esm.html#json-modules

Signed-off-by: Kevin Locke <[email protected]>

Author: kevinoid

.github/workflows/node.js.yml

@@ -68,7 +68,7 @@ jobs:
         - ubuntu-latest
         - windows-latest
         node:
-        - '20.0'
+        - '20.18'
         - latest
         exclude:
         # Exclude os/version already run in test-primary

package.json

@@ -82,7 +82,7 @@
     "eslint": "^9.21.0"
   },
   "engines": {
-    "node": "^20.11.0 || >=21.1.0",
+    "node": "^20.18.3 || >=21.1.0",
     "npm": ">=1.3.7"
   }
 }