[Serializer] Putting the serializer component on steroids

.github/expected-missing-return-types.diff

@@ -521,3 +521,13 @@ diff --git a/src/Symfony/Contracts/Translation/LocaleAwareInterface.php b/src/Sy
 +    public function setLocale(string $locale): void;
 
      /**
+diff --git a/src/Symfony/Contracts/Translation/TranslatorTrait.php b/src/Symfony/Contracts/Translation/TranslatorTrait.php
+--- a/src/Symfony/Contracts/Translation/TranslatorTrait.php
++++ b/src/Symfony/Contracts/Translation/TranslatorTrait.php
+@@ -26,5 +26,5 @@ trait TranslatorTrait
+      * @return void
+      */
+-    public function setLocale(string $locale)
++    public function setLocale(string $locale): void
+     {
+         $this->locale = $locale;

.github/workflows/integration-tests.yml

@@ -107,7 +107,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install system dependencies
         run: |
@@ -190,7 +190,7 @@ jobs:
       #    sudo rm -rf .phpunit
       #    [ -d .phpunit.bak ] && mv .phpunit.bak .phpunit
 
-      - uses: marceloprado/has-changed-path@v1
+      - uses: marceloprado/has-changed-path@v1.0.1
         id: changed-translation-files
         with:
           paths: src/**/Resources/translations/*.xlf

.github/workflows/intl-data-tests.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install system dependencies
         run: |

.github/workflows/package-tests.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: Ubuntu-20.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Fetch branch from where the PR started
         run: git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*

.github/workflows/phpunit-bridge.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2

.github/workflows/psalm.yml

@@ -30,12 +30,12 @@ jobs:
           coverage: none
 
       - name: Checkout target branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.base_ref }}
 
       - name: Checkout PR
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install dependencies
         run: |

.github/workflows/unit-tests.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 2
 

CHANGELOG-6.3.md

@@ -7,6 +7,40 @@ in 6.3 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v6.3.0...v6.3.1
 
+* 6.3.4 (2023-08-26)
+
+ * bug #51475 [Serializer] Fix union of enum denormalization (mtarld)
+ * bug #51474 [Serializer] Fix wrong InvalidArgumentException thrown (mtarld)
+ * bug #51494 Fixed attachment base64 content string in MailerSendApiTransport (pavelwitassek)
+ * bug #51350 [Security] Prevent creating session in stateless firewalls (Seb33300)
+ * bug #51104 [Security] Fix loading user from UserBadge (guillaumesmo)
+ * bug #51473 [VarDumper] Fix managing collapse state in CliDumper (nicolas-grekas)
+ * bug #51369 [Serializer] Fix deserializing object collection properties (X-Coder264)
+ * bug #51399 [Serializer] Fix deserializing of nested snake_case attributes using CamelCaseToSnakeCaseNameConverter (Victor-Truhanovich)
+ * bug #51456 [Serializer] Fix serialized name with groups during denormalization (mtarld)
+ * bug #51445 [Security] FormLoginAuthenticator: fail for non-string password (dmaicher)
+ * bug #51424 [HttpFoundation] Fix base URI detection on IIS with UrlRewriteModule (derrabus)
+ * bug #51396 [HttpKernel] Fix missing Request in RequestStack for StreamedResponse (Ismail Turan)
+ * bug #51378 [Console] avoid multiple new line when message already ends with a new line in section output (joelwurtz)
+ * bug #51336 [Notifier] [Pushover] Fix invalid method call + improve exception message (ahmedghanem00)
+ * bug #51345 [AssetMapper] Fixing bug where a circular exception could be thrown while making error message (weaverryan)
+ * bug #48840 [Validator] Dump Valid constraints on debug command (macintoshplus)
+ * bug #51223 [Console] Fix linewraps in `OutputFormatter` (maxbeckers)
+ * bug #51307 [DependencyInjection] fix dump xml with array/object/enum default value (Jean-Beru)
+ * bug #51355 [Console] fix section output when multiples section with max height (joelwurtz)
+ * bug #51359 [Security] Fix error with lock_factory in login_throttling (BaptisteContreras)
+ * bug #51326 [FrameworkBundle] Fix xsd for handle-all-throwables (Jean-Beru)
+ * bug #51328 [Messenger] Always return bool from messenger amqp connection nack (Danielss89)
+ * bug #51295 [Mailer] update Brevo SMTP host (bastien-wink)
+ * bug #51301 [FrameworkBundle] add missing default-doctrine-dbal-provider cache pool attribute to XSD (xabbuh)
+ * bug #51296 [Process] Fix silencing `wait` when using a sigchild-enabled binary (nicolas-grekas)
+ * bug #51251 [DependencyInjection] Do not add `return` in `LazyClosure` when return type of closure is `void` (ruudk)
+ * bug #51219 [DependencyInjection][HttpKernel] Fix using `#[AutowireCallable]` with controller arguments (HypeMC)
+ * bug #51201 [Workflow] fix MermaidDumper when place contains special char (lyrixx)
+ * bug #49195 [Crawler] Fix regression where cdata nodes will return empty string (NanoSector)
+ * bug #51061 [DoctrineBridge] Bugfix - Allow to remove LazyLoaded listeners by object (VincentLanglet)
+ * bug #51190 [Clock] load function only if not loaded before (xabbuh)
+
 * 6.3.3 (2023-07-31)
 
  * bug #51178 [Finder] Revert "Fix children condition in ExcludeDirectoryFilterIterator" (derrabus)