minor #7661 [Security] Update security images (dominikhajduk)

This PR was merged into the 3.2 branch.

Discussion
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[Security] Update security images

From version 3.2 Symfony display firewall info in debug toolbar. Updated images for: https://symfony.com/doc/current/security.html#initial-security-yml-setup-authentication
https://symfony.com/doc/current/security.html#b-configuring-how-users-are-loaded

After changes from platform.sh:
http://pr-7661-wt4uu4y-6qmocelev2lwe.eu.platform.sh/security.html
http://pr-7661-wt4uu4y-6qmocelev2lwe.eu.platform.sh/security.html#b-configuring-how-users-are-loaded

Commits
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af9a6d6 Update security images

Author: xabbuh