6.0.0

Team changes
@localheinz @Ciloe and @alexmart are now maintainers on the project.

BC Breaks

• Remove support for php 7.3 and earlier (@stephanvierkant)
• Remove support for Symfony 3 and earlier (@stephanvierkant)
• Mark the values of the display and severity options as required (@stof)
• master branch has been moved to main (@OwlyCode)

New features

• Added a Github Action reporter (@franmomu)
• Added support for Symfony 6 (@stephanvierkant)
• Added template file resolution (@OwlyCode)

Bugfixes

• Fix PHP 8.1 deprecation errors (@cedric-anne)