Bumping the release to RC2

PHPStan FormType errors fixed.

Autowire repositories

Fix locked category

Fix point tags triggering

Mitigate missing country flags when a contact is rendered

DPMMA-2372 Email usages

"Don't overwrite value if already exists" option is not working In Import Contacts.

Doctrine result cache with automatic invalidation

Deprecating unused classes

# Conflicts:
# app/bundles/CoreBundle/Config/services.php
# app/bundles/PluginBundle/Entity/Inte...

Merging 5.x to 5.1 to update the feature branch with recent refactoring

Index for speeding up email send process

This reverts commit d1fc0b0642e4ae9718decf97658699e84a9d0f51.

Removing obvious comments

[type-declarations] Add property type from assigns

[phpstan] Few fixes from AbstractStandardFormController

[cs] Add space between class members

[cs] newlines for promoted properties to make them easier to read

[cs] cleanup unused iheritdoc docblocks

[phpstan] Remove null param/return tag that was hidding missing param/return tags

Fixing API error caused by the strict type mismatch

[type-declarations] Add scalar and strict type-based returns

[tests] Add features up to PHP 8