Upgrade dependencies

[masteradhoc]

We should composer update some dependencies that we use in two-factor that are outdated.

Package	Current	Action
automattic/vipwpcs	^3.0	[✅ Current]
dealerdirect/phpcodesniffer-composer-installer	^1.0	upgrade to v1.2
phpcompatibility/phpcompatibility-wp	3.0.0-alpha2	[✅ Current]
phpunit/phpunit	^8.5|^9.6	Upgrade needed
spatie/phpunit-watcher	^1.23	upgrade to 1.24.4
szepeviktor/phpstan-wordpress	^1.3	Upgrade to V2+
wp-coding-standards/wpcs	^3.3	✅ Current
yoast/phpunit-polyfills	^4.0	upgrade to new version

[PANawkar]

Hi @masteradhoc,

I would like to work on this. Could you please assign this ticket to me?

Thanks.