Bump Dependencies

[github-actions]

> ungit@1.5.18 bumpdependencies
> ncu --upgrade --reject bootstrap

Upgrading /home/runner/work/ungit/ungit/package.json

 electron              ~12.0.9  →  ~13.1.7     
 electron-packager     ~15.2.0  →  ~15.3.0     
 eslint                ~7.27.0  →  ~7.31.0     
 eslint-plugin-mocha    ~8.1.0  →   ~9.0.0     
 mocha                  ~8.4.0  →   ~9.0.2     
 nodemon                ~2.0.7  →  ~2.0.12     
 npm-check-updates    ~11.5.13  →  ~11.8.3     
 prettier               ~2.3.0  →   ~2.3.2     
 puppeteer              ~9.1.1  →  ~10.1.0     
 supertest              ~6.1.3  →   ~6.1.4     
 @primer/octicons      ~14.1.0  →  ~14.2.2     
 diff2html              ~3.4.4  →   ~3.4.7     
 latest-version         ~5.1.0  →   ~6.0.0     
 open                   ~8.1.0  →   ~8.2.1     
 socket.io              ~4.1.2  →   ~4.1.3     

Run npm install to install new versions.