Changelog (https://github.com/symfony/symfony/compare/v6.4.19...v6.4.20)

• bug #60054 [Form] Use duplicate_preferred_choices to set value of ChoiceType (@aleho)
• bug #59858 Update JsDelivrEsmResolver::IMPORT_REGEX to support dynamic imports (@natepage)
• bug #60019 [HttpKernel] Fix TraceableEventDispatcher when the Stopwatch service has been reset (@lyrixx)
• bug #59975 [HttpKernel] Only remove E_WARNING from error level during kernel init (@fritzmg)
• bug #59988 [FrameworkBundle] Remove redundant name attribute from default_context (@HypeMC)
• bug #59949 [Process] Use a pipe for stderr in pty mode to avoid mixed output between stdout and stderr (@joelwurtz)
• bug #59940 [Cache] Fix missing cache data in profiler (@dcmbrs)
• bug #59965 [VarExporter] Fix support for hooks and asymmetric visibility (@nicolas-grekas)
• bug #59874 [Console] fix progress bar messing output in section when there is an EOL (@joelwurtz)
• bug #59888 [PhpUnitBridge] don't trigger "internal" deprecations for PHPUnit Stub objects (@xabbuh)
• bug #59830 [Yaml] drop comments while lexing unquoted strings (@xabbuh)
• bug #59884 [VarExporter] Fix support for asymmetric visibility (@nicolas-grekas)
• bug #59881 [VarExporter] Fix support for abstract properties (@nicolas-grekas)
• bug #59841 [Cache] fix cache data collector on late collect (@dcmbrs)

[PR] https://github.com/symfony/symfony/pull/60074