Changelog (v5.3.0-RC1...v5.3.0)

• bug [FrameworkBundle] fix ConfigBuilderCacheWarmer #41458 [FrameworkBundle] fix ConfigBuilderCacheWarmer (@nicolas-grekas)
• bug [FrameworkBundle] fix creating ContainerBuilder at warmup/CLI time #41456 [FrameworkBundle] fix creating ContainerBuilder at warmup/CLI time (@nicolas-grekas)
• bug [FrameworkBundle] Remove redundant cache service #41452 [FrameworkBundle] Remove redundant cache service (@derrabus)
• bug [Translation] Remove PoEditor Provider #41451 [Translation] Remove PoEditor Provider (@welcoMattic)
• bug [Form] Use !isset for checks cause this doesn't falsely include 0 #41000 [Form] Use !isset for checks cause this doesn't falsely include 0 (@kai Dederichs)
• bug [DependencyInjection] keep container.service_subscriber tag on the decorated definition #41407 [DependencyInjection] keep container.service_subscriber tag on the decorated definition (@xabbuh)
• bug [Filesystem] fix readlink() for Windows #40866 [Filesystem] fix readlink() for Windows (@a1812)
• bug [HttpKernel] Throw when HttpKernel is created and the env is empty #41402 [HttpKernel] Throw when HttpKernel is created and the env is empty (@nicolas-grekas)
• bug [SecurityBundle] Don't register deprecated listeners with authenticator manager enabled #41376 [SecurityBundle] Don't register deprecated listeners with authenticator manager enabled (@chalasr)
• bug [Form] fix support for years outside of the 32b range on x86 arch #41394 [Form] fix support for years outside of the 32b range on x86 arch (@nicolas-grekas)
• bug Make Mailgun Header compatible with other Bridges #41380 Make Mailgun Header compatible with other Bridges (@jderusse)
• bug [Messenger] Fix merging PrototypedArrayNode associative values #39847 [Messenger] Fix merging PrototypedArrayNode associative values (@svityashchuk)
• bug [Ldap] Avoid calling the deprecated getUsername() #41367 [Ldap] Avoid calling the deprecated getUsername() (@derrabus)
• bug [WebProfilerBundle] Wrapping exception js in Sfjs check and also loading base_js Sfjs if needed #41346 [WebProfilerBundle] Wrapping exception js in Sfjs check and also loading base_js Sfjs if needed (@weaverryan)
• bug [VarDumper] Don't pass null to parse_url() #41344 [VarDumper] Don't pass null to parse_url() (@derrabus)