Fix Symfony 7.1+ compatibility (#456)

Support 7 (#450)

* Add sf 7 to composer.json

* Added missing dependencies

* Added dependency on Symfony validator

* Fix frontend (bug probably also exists in the 6 branch)

* Fix also the error conditions in the UI

* Restrict composer.json to SF 7. The 6 branch is for SF 6, let's keep them separate

* Restrict composer.json to SF 7. The 6 branch is for SF 6, let's keep them separate

* Update minimum php version

* Update github action to use php 8.2

* Remove propel support and fix unit tests (differences in loading files with odm definitions)

* Update the version of github actions to v4

* Remove * from composer.json

Merge pull request #417 from lexik/composer-update-fix-errors-on-php8

Updated for php 8 minimal changes to make tests pass after composer u…

Self merge, because I know everybody is very busy and I hope to eliminate some of the errors people have seen lately. Please remember the 5.3 branch is for php 7.4 projects and should be compatible up to Symfony 5.3. This is something I did not try (yet). I tested up until SF 5.2 (5.2 branch). Now amaing for SF 6 with master.

Merge pull request #391 from bartmcleod/php8-support

Php8 support

Merge pull request #389 from lordjancso/feature/fixed-the-clean-cache…

…-listener

Fixed the types

Merge pull request #387 from JZuidema/patch-1

Fix domains for +intl-icu files

Merge pull request #386 from bartmcleod/5.0

Fix for #385 fix service configuration

Merge pull request #384 from bartmcleod/5.0

Updated many things after testing in actual Symfony 5 project

Merge pull request #383 from bartmcleod/4.4

composer should require the framework bundle

Merge pull request #380 from bartmcleod/master

symfony/symfony and mongo requirements moved to require-dev