Can not install plugin on Akeneo:v7.0.42

[vsilent]

When trying to install Akeneo-Bundle using php composer.phar require splash/akeneo-bundle
I get error:

./composer.json has been updated
Running composer update splash/akeneo-bundle
Loading composer repositories with package information
Restricting packages listed in "symfony/symfony" to "5.4.*"
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - splash/akeneo-bundle 1.5.0 requires php ^7.2 -> your php version (8.1.26) does not satisfy that requirement.
    - splash/akeneo-bundle[2.7.0, ..., 2.7.9] require akeneo/pim-community-dev ^7.0 -> satisfiable by akeneo/pim-community-dev[v7.0.0, ..., v7.0.62] from composer repo (https://repo.packagist.org) but akeneo/pim-community-dev is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.
    - Root composer.json requires splash/akeneo-bundle * -> satisfiable by splash/akeneo-bundle[1.5.0, 2.7.0, ..., 2.7.9].

You can also try re-running composer require with an explicit version constraint, e.g. "composer require splash/akeneo-bundle:*" to figure out if any version is installable, or "composer require splash/akeneo-bundle:^2.1" if you know which you need.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.```


Ok, then, trying. 



```trydirect@3393584d7ec8:/var/www/backend$ composer require splash/akeneo-bundle:2.7.9
./composer.json has been updated
Running composer update splash/akeneo-bundle
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires splash/akeneo-bundle 2.7.9 -> satisfiable by splash/akeneo-bundle[2.7.9].
    - splash/akeneo-bundle 2.7.9 requires akeneo/pim-community-dev ^7.0 -> satisfiable by akeneo/pim-community-dev[v7.0.0, ..., v7.0.62] from composer repo (https://repo.packagist.org) but akeneo/pim-community-dev is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.

Akeneo v7.0.42
trydirect@3393584d7ec8:/var/www/backend$ ./bin/console -V
Symfony 5.4.38 (env: prod, debug: false)

Any hints?