fix(constants): access .default when requiring ESM default export

Fixes CommonJS/ESM interop issue where require() of ESM default export
returns { __esModule: true, default: value } instead of the value itself.

Author: jdalton

src/constants/node.ts

@@ -24,7 +24,7 @@ let _maintainedNodeVersions:
   | undefined
 export function getMaintainedNodeVersions() {
   if (_maintainedNodeVersions === undefined) {
-    _maintainedNodeVersions = require('#lib/maintained-node-versions')
+    _maintainedNodeVersions = require('#lib/maintained-node-versions').default
   }
   return _maintainedNodeVersions
 }