Symfony 6.3.7 has just been released.
Here is the list of the most important changes since 6.3.6:

bug #52329 [HttpClient] Psr18Client: parse HTTP Reason Phrase for Response (@Hanmac)
bug #52332 [Yaml] Fix deprecated passing null to trim() (@javaDeveloperKid)
bug #52343 [Intl] Update the ICU data to 74.1 (@jderusse)
bug #52347 [Form] Fix merging form data and files (ter) (Jan Pintr)
bug #52307 [Scheduler] Save checkpoint in a finally block (@FrancoisPog)
bug #52308 [SecurityBundle] Fix missing login-link element in xsd schema (@fancyweb)
bug #51992 [Serializer] Fix using DateIntervalNormalizer with union types (@Jeroeny)
bug #52276 DB table locks on messenger_messages with many failures (@bn-jdcook)
bug #52232 [Messenger] declare constructor argument as optional for backwards compatibility (@xabbuh)
bug #52283 [Serializer] Handle default context when denormalizing timestamps in DateTimeNormalizer (@mtarld)
bug #52268 [Mailer][Notifier] Update Sendinblue / Brevo API host (@Stephanie)
bug #52255 [Form] Skip merging params & files if there are no files in the first place (@dmaicher, @priyadi)

Want to upgrade to this new release? Because Symfony protects
backwards-compatibility very closely, this should be quite easy. Use
SymfonyInsight upgrade reports
to detect the code you will need to change in your project and
read our upgrade
documentation to learn more.

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