feat: open up versions phpunit and enlightn/security-checker

[shakaran]

This allows to update the packages with PHP 8.4 version without conflicts

For example it resolves:

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires liip/monitor-bundle 2.23.2 -> satisfiable by liip/monitor-bundle[2.23.2].
    - laminas/laminas-diagnostics[1.9.0, ..., 1.11.x-dev] require php ^7.3 || ~8.0.0 -> your php version (8.4.6) does not satisfy that requirement.
    - laminas/laminas-diagnostics[1.12.0, ..., 1.19.x-dev] require php ^7.4 || ~8.0.0 || ~8.1.0 -> your php version (8.4.6) does not satisfy that requirement.
    - laminas/laminas-diagnostics[1.20.0, ..., 1.22.x-dev] require php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.4.6) does not satisfy that requirement.
    - laminas/laminas-diagnostics[1.23.0, ..., 1.24.x-dev] require php ~8.0.0 || ~8.1.0 || ~8.2.0 -> your php version (8.4.6) does not satisfy that requirement.
    - laminas/laminas-diagnostics[1.25.0, ..., 1.26.x-dev] require php ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.6) does not satisfy that requirement.
    - laminas/laminas-diagnostics[1.27.0, ..., 1.28.x-dev] require enlightn/security-checker ^1.10 -> found enlightn/security-checker[v1.10.0, v1.11.0, 1.x-dev] but it conflicts with your temporary update constraint (enlightn/security-checker:^2.0.0).
    - liip/monitor-bundle 2.23.2 requires laminas/laminas-diagnostics ^1.9 -> satisfiable by laminas/laminas-diagnostics[1.9.0, ..., 1.28.x-dev].

composer why enlightn/security-checker
laminas/laminas-diagnostics 1.27.0 requires enlightn/security-checker (^1.10) 

composer why laminas/laminas-diagnostics
liip/monitor-bundle 2.23.2 requires laminas/laminas-diagnostics (^1.9) 

composer why liip/monitor-bundle
__root__ dev-develop requires liip/monitor-bundle (2.23.2) 

[kbond]

@shakaran there was a lot of work needed to I opened #320 as a replacement.

[kbond]

Thanks for kickstarting this @shakaran.