Update release date for 8.2.4

Add pull requests to CHANGELOG

Update changelog links

Merge pull request thephpleague#1159 from Sephster/fix-key-passing

Fix Key Passing where Priv Key has a Passphrase

Merge pull request thephpleague#1146 from driesvints/php8

Add Support for PHP 8

Update changelog

Revert PHPStan update

Update changelog for release of version 8

Update changelog for version 7.4.0

Update links