Symfony 4.3.1 released

Symfony 4.3.1 has just been released. Here is a list of the most important changes: bug #31894 Fix wrong requirements for ocramius/proxy-manager in root composer.json (@henrikvolmer) bug #31865 [Form] Fix wrong DateTime on outdated ICU library (@aweelex) bug #31893 [HttpKernel] fix link to source generation (@nicolas-grekas) bug #31880 [FrameworkBundle] fix BC-breaking property in WebTestAssertionsTrait (@nicolas-grekas)…