Update mailcheck dependency

[gene1wood]

Once @derrickko deploys mailcheck 1.1.2 to NPM, resolving mailcheck/mailcheck#147 , please update the git-notifier bower.json file to depend on this new version.

This will fix the mailcheck bug of git-notifier falsely suggesting addresses like foo@bar.win are invalid.

[ferreiro]

hey, mailcheck package is abandoned and have bugs, but we have an alternative!

I rewrote it entirely and update it for 2022 and onward: https://github.com/ZooTools/email-spell-checker

💙 Written in TypeScript and removed jQuery
✅ Fixed a couple of bugs like smashsend/email-spell-checker#3 or smashsend/email-spell-checker#4
🚀 Reduced bundle size to <2KB.

✨ Update TLDs (69+) and added modern startup domains (like .io, .so, .xyz or .dev)
🙏 Implemented suggestions that people made in this repo that were ignored.
Link: https://github.com/ZooTools/email-spell-checker

Come check it out and give it a ⭐️ for the effort.