feat(ci.yaml): use LTS version of Node.js

This change updates the Node.js version used in the GitHub Actions
workflow from 22.x to the latest Long Term Support (LTS) version. This
ensures stability and long-term compatibility for the project.

Author: ryoppippi

.github/workflows/ci.yaml

@@ -5,7 +5,7 @@ on:
   pull_request:
 
 env:
-  NODE_VERSION: 22.x
+  NODE_VERSION: lts/*
 
 jobs:
   ci: