New features

[50bb0c1] Upgrade to Symfony 7.3 (@rosier)
[fb77fd5] Promote Invokable Commands (@yceruto)

Bug fixes

[c5d841b] Re-add fixed APP_SECRET value (@nicolas-grekas)
[b1a3755] Move the twbs/bootstrap dependency from require-dev to require (@rosier)
[e49b81c] Run Composer validate before installing dependencies (@xabbuh)
[16e7e5a] Install security patches (@xabbuh)
[1eafe9a] Remove duplicates and leftovers from .gitignore (@rosier)
[28f82bf] Update a comment about integration tests (@94noni)