Bump Dependencies

[github-actions]

> ungit@1.5.16 bumpdependencies /home/runner/work/ungit/ungit
> ncu --upgrade --reject bootstrap

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

 @primer/octicons        ~12.1.0  →   ~13.0.0     
 diff2html                ~3.4.1  →    ~3.4.3     
 open                     ~8.0.4  →    ~8.0.8     
 socket.io                ~4.0.1  →    ~4.0.2     
 yargs                   ~16.2.0  →   ~17.0.1     
 electron                ~12.0.2  →   ~12.0.7     
 eslint                  ~7.23.0  →   ~7.26.0     
 eslint-config-prettier   ~8.1.0  →    ~8.3.0     
 eslint-plugin-prettier   ~3.3.1  →    ~3.4.0     
 mocha                    ~8.3.2  →    ~8.4.0     
 npm-check-updates       ~11.3.0  →  ~11.5.10     
 prettier                 ~2.2.1  →    ~2.3.0     
 puppeteer                ~8.0.0  →    ~9.1.1     

Run npm install to install new versions.