Support Symonfy 8

[tacman]

Symfony 8 is now in beta

[tacman]

This is getting close -- can you update webmozart/assert in main?

composer require openconext/monitor-bundle:dev-main
./composer.json has been updated
Running composer update openconext/monitor-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 openconext/monitor-bundle dev-main -> satisfiable by openconext/monitor-bundle[dev-main].
    - openconext/monitor-bundle dev-main requires webmozart/assert ^1.10 -> found webmozart/assert[1.10.0, 1.11.0, 1.12.0, 1.12.1] but the package is fixed to 2.1.6 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Installation failed, reverting ./composer.json and ./composer.