Symfony 7.2.3 has just been released.
Here is the list of the most important changes since 7.2.2:

bug #58889 [Serializer] Handle default context in Serializer (@Valmonzo)
bug #59631 [HttpClient] Fix processing a NativeResponse after its client has been reset (@Jean-Beru)
bug #59590 [Security] Throw an explicit error when refreshing a token with a null user (@alexandre-daubois)
bug #59625 [FrameworkBundle] Add missing not-compromised-password entry in XSD (@alexandre-daubois)
bug #59610 [Mailer] Ensure TransportExceptionInterface populates stream debug data (@bytestream)
bug #59598 [Mime] Fix body validity check in Email when using Message::setBody() (@alexandre-daubois)
bug #59513 [Messenger ] Extract retry delay from nested RecoverableExceptionInterface (@AydinHassan)
feature #59544 [AssetMapper] Fix CssCompiler matches url in comments (@smnandre)
bug #59575 [DoctrineBridge] Add support for doctrine/persistence 4 (@greg0ire)
bug #59611 [Mailer][Notifier] Fix channel parameter value to fixed value for Mailer and Notifier Sweego Transports (@welcoMattic)
bug #59399 [DomCrawler] Make ChoiceFormField::isDisabled return true for unchecked disabled checkboxes (@MatTheCat)
bug #59581 [Cache] Don’t clear system caches on cache:clear (@nicolas-grekas)
bug #59579 [FrameworkBundle] Fix patching refs to the tmp warmup dir in files generated by optional cache warmers (@nicolas-grekas)
bug #59580 [Config] Add missing json_encode flags when creating .meta.json files (@nicolas-grekas)
bug #57459 [PropertyInfo] convert legacy types to TypeInfo types if getType() is not implemented (@xabbuh)
bug #59525 [HtmlSanitizer] Fix access to undefined keys in UrlSanitizer (Antoine Beyet)
bug #59538 [VarDumper] fix dumped markup (@xabbuh)
bug #59508 [Messenger] [AMQP] Improve AMQP connection issues (@AurelienPillevesse)
bug #59501 [Serializer] [ObjectNormalizer] Filter int when using FILTER_BOOL (@DjordyKoert)
bug #59515 [FrameworkBundle] Fix wiring ConsoleProfilerListener (@nicolas-grekas)
bug #59136 [DependencyInjection] Reset env vars with kernel.reset (@faizanakram99)
bug #59488 [Lock] Make sure RedisStore will also support Valkey (@PatNowak)
bug #59486 [Validator] Update sr_Cyrl 120:This value is not a valid slug. (@kaznovac)
bug #59403 [FrameworkBundle][HttpFoundation] Reset Request’s formats using the service resetter (@nicolas-grekas)
bug #59404 [Mailer] Fix SMTP stream EOF handling on Windows by using feof() (@skmedix)
bug #59390 [VarDumper] Fix blank strings display (@MatTheCat)
bug #59446 [Routing] Fix configuring a single route’s hosts (@MatTheCat)
bug #58901 [HttpClient] Ignore RuntimeExceptions thrown when rewinding the PSR-7 created in HttplugWaitLoop::createPsr7Response (@KurtThiemann)
bug #59046 [HttpClient] Fix Undefined array key connection (@PhilETaylor)
bug #59055 [HttpFoundation] Fixed IpUtils::anonymize exception when using IPv6 link-local addresses with RFC4007 scoping (@jbtronics)
bug #59256 [Mailer] Fix Sendmail memory leak (@rch7)
bug #59375 [RemoteEvent][Webhook] fix SendgridPayloadConverter category support (@ericabouaf)
bug #59367 [PropertyInfo] Make sure that SerializerExtractor returns null for invalid class metadata (@wuchen90)
bug #59376 [RemoteEvent][Webhook] Fix SendgridRequestParser and SendgridPayloadConverter (@ericabouaf)
bug #59381 [Yaml] fix inline notation with inline comment (@alexpott)
bug #59352 [Messenger] Fix TransportMessageIdStamp not always added (@HypeMC)
bug #59185 [DoctrineBridge] Fix compatibility to Doctrine persistence 2.5 in Doctrine Bridge 6.4 to avoid Projects stuck on 6.3 (@alexander-schranz)
bug #59245 [PropertyInfo] Fix add missing composer conflict (@mtarld)
bug #59292 [WebProfilerBundle] Fix event delegation on links inside toggles (@MatTheCat)
bug #59362 [Doctrine][Messenger] Prevents multiple TransportMessageIdStamp being stored in envelope (@rtreffler)
bug #59323 [Serializer] Fix exception thrown by YamlEncoder (@VincentLanglet)
bug #59293 [AssetMapper] Fix JavaScript compiler creates self-referencing imports (@smnandre)
bug #59296 [Form] do not render hidden CSRF token forms with autocomplete set to off (@xabbuh)
bug #59349 [Yaml] reject inline notations followed by invalid content (@xabbuh)
bug #59229 [WebProfilerBundle] fix loading of toolbar stylesheet (@alexislefebvre)
bug #59363 [VarDumper] Fix displaying closure’s „this“ from anonymous classes (@nicolas-grekas)
bug #59364 [ErrorHandler] Don’t trigger „internal“ deprecations for anonymous LazyClosure instances (@nicolas-grekas)
bug #59221 [PropertyAccess] Fix compatibility with PHP 8.4 asymmetric visibility (@Florian-Merle)
bug #59348 [Lock] Fix predis command error checking (@dciprian-petrisor)
bug #59357 [HttpKernel] Don’t override existing LoggerInterface autowiring alias in LoggerPass (@nicolas-grekas)
bug #59347 [Security] Fix triggering session tracking from ContextListener (@nicolas-grekas)
bug #59146 [Security] Use the session only if it is started when using SameOriginCsrfTokenManager (Thibault G)
bug #59188 [HttpClient] Fix reset() not called on decorated clients (@HypeMC)
bug #59339 [SecurityBundle] Remove outdated guard from security xsd schema (@chalasr)
bug #59343 [Security] Adjust parameter order in exception message (@Link1515)
bug #59342 [SecurityBundle] Do not pass traceable authenticators to security.helper (@MatTheCat)
bug #59320 [HttpClient] fix amphp http client v5 unix socket (@praswicaksono)
bug #59312 [Yaml] Fix parsing of unquoted strings in Parser::lexUnquotedString() to ignore spaces (@Link1515)
bug #59334 [ErrorHandler] [A11y] Simple proposal for color updates on error stack traces against colorblindness (@DocFX)

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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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