Bump symfony/config from 3.4.36 to 3.4.43 (#987)

Bumps [symfony/config](https://github.com/symfony/config) from 3.4.36 to 3.4.43.
- [Release notes](https://github.com/symfony/config/releases)
- [Changelog](https://github.com/symfony/config/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/config/compare/v3.4.36...v3.4.43)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

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": "f78e950e2dfef7debe88d7b64e2b4aec",
+    "content-hash": "b24d7cc3989b64b679b388afafb16d09",
     "packages": [
         {
             "name": "jaxl/jaxl",
@@ -218,6 +218,12 @@
                 }
             ],
             "description": "PHPMailer is a full-featured email creation and transfer class for PHP",
+            "funding": [
+                {
+                    "url": "https://github.com/synchro",
+                    "type": "github"
+                }
+            ],
             "time": "2020-05-27T12:24:03+00:00"
         },
         {
@@ -271,16 +277,16 @@
         },
         {
             "name": "symfony/config",
-            "version": "v3.4.36",
+            "version": "v3.4.43",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/config.git",
-                "reference": "a599a867d0e4a07c342b5f1e656b3915a540ddbe"
+                "reference": "9e2aa97f0d51f114983666f5aa362426d53e004a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/config/zipball/a599a867d0e4a07c342b5f1e656b3915a540ddbe",
-                "reference": "a599a867d0e4a07c342b5f1e656b3915a540ddbe",
+                "url": "https://api.github.com/repos/symfony/config/zipball/9e2aa97f0d51f114983666f5aa362426d53e004a",
+                "reference": "9e2aa97f0d51f114983666f5aa362426d53e004a",
                 "shasum": ""
             },
             "require": {
@@ -331,7 +337,21 @@
             ],
             "description": "Symfony Config Component",
             "homepage": "https://symfony.com",
-            "time": "2019-12-01T10:45:41+00:00"
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-07-23T09:37:51+00:00"
         },
         {
             "name": "symfony/dependency-injection",
@@ -573,16 +593,16 @@
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.13.1",
+            "version": "v1.18.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
-                "reference": "f8f0b461be3385e56d6de3dbb5a0df24c0c275e3"
+                "reference": "1c302646f6efc070cd46856e600e5e0684d6b454"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/f8f0b461be3385e56d6de3dbb5a0df24c0c275e3",
-                "reference": "f8f0b461be3385e56d6de3dbb5a0df24c0c275e3",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/1c302646f6efc070cd46856e600e5e0684d6b454",
+                "reference": "1c302646f6efc070cd46856e600e5e0684d6b454",
                 "shasum": ""
             },
             "require": {
@@ -594,7 +614,11 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.13-dev"
+                    "dev-master": "1.18-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
                 }
             },
             "autoload": {
@@ -627,7 +651,21 @@
                 "polyfill",
                 "portable"
             ],
-            "time": "2019-11-27T13:56:44+00:00"
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-07-14T12:35:20+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
@@ -825,8 +863,10 @@
     "platform": {
         "php": "^5.5.9|>=7.0.8",
         "ext-curl": "*",
+        "ext-json": "*",
         "ext-pdo": "*",
         "ext-xml": "*"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "1.1.0"
 }