Release 1.15.0

### Removed

* AgentPress Pro

### Dependency updates

* google-analytics-for-wordpress: 9.10.0->9.11.1

* wp-native-php-sessions: 1.4.4->1.4.5

* really-simple-ssl: 9.5.4->9.5.5

* redirection: 5.5.2->5.6.0

* google-calendar-events: 3.5.9->3.6.0

* simple-social-icons: 3.2.5->4.0.0

* tablepress: 3.2.5->3.2.6

* wordpress-seo: 26.5->26.7