Compatibility issues with PHP 8.4

[Whip]

Please fix the code related to this warning to be compatible with PHP 8.4

SendGrid\Mail\Mail::__construct(): Implicitly marking parameter $globalSubstitutions as nullable is deprecated, the explicit nullable type must be used instead in ../vendor/sendgrid/sendgrid/lib/mail/Mail.php on line 98

[AdamDomafoldi]

Please fix this one as well: ERROR: Creation of dynamic property SendGrid\\Mail\\Mail::$attachements is deprecated on line 105

[dmnlk]

#1119
fixed by this PR

[AdamDomafoldi]

It is still not fixed: ERROR: Creation of dynamic property SendGrid\Mail\Mail::$attachements is deprecated on line 105

[BaranKeles]

The SendGrid library has already addressed this deprecation in older version. Updating to the latest version should resolve this issue along with other PHP 8.4 compatibility fixes. Did you try to update?

This should update: composer update sendgrid/sendgrid