feat(vim): item 20 vimInsertModeRemaps 双键 INSERT 序列映射 (jj→Esc, CC 2.1.208) - #101

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/