Bump symfony/yaml from 4.2.1 to 4.3.5

Bumps [symfony/yaml](https://github.com/symfony/yaml) from 4.2.1 to 4.3.5.
- [Release notes](https://github.com/symfony/yaml/releases)
- [Changelog](https://github.com/symfony/yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/yaml/compare/v4.2.1...v4.3.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.json

@@ -12,7 +12,7 @@
         "symfony/flex": "^1.1",
         "symfony/framework-bundle": "4.2.*",
         "symfony/orm-pack": "^1.0",
-        "symfony/yaml": "4.2.*",
+        "symfony/yaml": "4.3.*",
         "tightenco/collect": "^5.7"
     },
     "config": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "80d95f9980e81a7c3025475d52763bdf",
+    "content-hash": "e014b385cd8d34a0bbf0283da94f7c53",
     "packages": [
         {
             "name": "composer/installers",
@@ -3234,16 +3234,16 @@
         },
         {
             "name": "symfony/yaml",
-            "version": "v4.2.11",
+            "version": "v4.3.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "9468fef6f1c740b96935e9578560a9e9189ca154"
+                "reference": "41e16350a2a1c7383c4735aa2f9fce74cf3d1178"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/9468fef6f1c740b96935e9578560a9e9189ca154",
-                "reference": "9468fef6f1c740b96935e9578560a9e9189ca154",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/41e16350a2a1c7383c4735aa2f9fce74cf3d1178",
+                "reference": "41e16350a2a1c7383c4735aa2f9fce74cf3d1178",
                 "shasum": ""
             },
             "require": {
@@ -3262,7 +3262,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.2-dev"
+                    "dev-master": "4.3-dev"
                 }
             },
             "autoload": {
@@ -3289,7 +3289,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2019-07-24T14:47:26+00:00"
+            "time": "2019-09-11T15:41:19+00:00"
         },
         {
             "name": "tightenco/collect",