Symfony 4.4.33 has just been released. Here is a list of the most
important changes:

• bug #43798 [Dotenv] Duplicate $_SERVER values in $_ENV if they don't exist (@fancyweb)
• bug #43799 [PhpUnitBridge] fix symlink to bridge in docker by making its path relative (@nicolas-grekas)
• bug #43781 [Messenger] Fix TraceableMessageBus implementation so it can compute caller even when used within a callback (@Ocramius)
• bug #43655 [VarDumper] Fix dumping twig templates found in exceptions (@event15)
• bug #43484 [Messenger] Fix Redis Transport when username is empty (@villfa)
• bug #43568 [Messenger] fix: TypeError in PhpSerializer::encode() (@dsech)
• bug #43591 [Config] Fix files sorting in GlobResource (@lyrixx)
• bug #43569 [HttpClient] fix collecting debug info on destruction of CurlResponse (@nicolas-grekas)
• bug #43545 [DependencyInjection] fix "url" env var processor (@nicolas-grekas)
• bug #43413 [VarDumper] Fix error with uninitialized XMLReader (@villfa)
• bug #43388 [Validator] Fixes URL validation for single-char subdomains (@DfKimera)
• bug #43333 [HttpClient] fix missing kernel.reset tag on TraceableHttpClient services (@nicolas-grekas)
• bug #43302 [Cache] Commit items implicitly only when deferred keys are requested (@Sergey Belyshkin)
• bug #43330 [Cache][Lock] fix SQLSRV throws for method_exists() (@GDmac)
• bug #43270 [VarDumper] Fix handling of "new" in initializers on PHP 8.1 (@nicolas-grekas)
• bug #43277 [DependencyInjection] fix support for "new" in initializers on PHP 8.1 (@nicolas-grekas)
• bug #43243 [HttpClient] accept headers when CURLE_RECV_ERROR is received before the content (@nicolas-grekas)
• bug #43205 [Serializer] Fix denormalizing XML array with empty body (4.4) (@alexandre-daubois)

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backwards-compatibility very closely, this should be quite easy. Use
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to detect the code you will need to change in your project and
read our upgrade
documentation to learn more.
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