Symfony 4.4.19

What's new in this version:

- [Serializer] Exclude non-initialized properties accessed with getters
- [Translator] fix handling plural for floating numbers
- [Messenger] fix redis messenger options with dsn
- [Messenger] Fix transporting non-UTF8 payloads by encoding them using base 64
- [PhpUnitBridge] Allow relative path to composer cache
- [HttpKernel] Configure the ErrorHandler even when it is overriden
- [Console] [Command] Fix Closure code binding when it is a static anonymous function
- [DoctrineBridge] Add username to UserNameNotFoundException
- [HttpFoundation] Drop int return type from parseFilesize()
- [HttpClient] Add check for constant in Curl client
- [HttpFoundation] Revert #38614 and add assert to avoid regressions
- Fix problem when SYMFONY_PHPUNIT_VERSION is empty string value
- [DependencyInjection] Skip deprecated definitions in CheckTypeDeclarationsPass
- [Security] Replace message data in JSON security error response
- [DoctrineBridge] Take into account that indexBy="person_id" could be a db column name, for a referenced entity
- [DoctrineBridge] Fix circular loop with EntityManager
- [DependencyInjection] Don't trigger notice for deprecated aliases pointing to deprecated definitions
- [HttpFoundation] use atomic writes in MockFileSessionStorage
- [Serializer] Rename normalize param
- Dont allow unserializing classes with a destructor
- [Mailer] Fix missing BCC recipients in SES bridge
- [Config]  fix handling float-like key attribute values
- [Yaml] a colon followed by spaces exclusively separates mapping keys and values
- [Cache] fix possible collision when writing tmp file in filesystem adapter
- Dont allow unserializing classes with a destructor - 4.4
- [DependencyInjection] Support PHP 8 builtin types in CheckTypeDeclarationsPass
- [VarDumper] fix mutating $GLOBALS while cloning it
- [DependencyInjection] Fix InvalidParameterTypeException for function parameters
- [HttpFoundation] parse cookie values containing the equal sign
- [DependencyInjection] do not break when loading schemas from network paths on Windows
- [Finder] apply the sort callback on the whole search result
- [TwigBridge] Remove full head content in HTML to text converter
- [WebProfilerBundle] take query and request parameters into account when matching routes
- [Yaml] keep trailing newlines when dumping multi-line strings
- [Form] disable error bubbling by default when inherit_data is configured
- [Lock] Fix config merging in lock
- [Yaml] do not dump extra trailing newlines for multiline blocks
- [Form] fix passing null $pattern to IntlDateFormatter
- [Messenger] Fix stopwach usage if it has been reset
- [VarDumper] Fix display of nullable union return types
- [VarDumper] fixed displaying "mixed" as "?mixed"
- [Mailer] Handle failure when sending DATA
- [ProxyManagerBridge] fix PHP notice, switch to "friendsofphp/proxy-manager-lts"