Reminder: Suggest Composer 2.6 when it becomes available

[mxr576]

As a follow up on composer/composer#11435

[mxr576]

and it happened
https://github.com/composer/composer/releases/tag/2.6.0

[mxr576]

we can also suggest it because of the audit ignore feature composer/composer#11605

[mxr576]

Closed via 9cb09b2