Bump symfony/dependency-injection from 3.4.47 to 4.0.15

Bumps [symfony/dependency-injection](https://github.com/symfony/dependency-injection) from 3.4.47 to 4.0.15.
- [Release notes](https://github.com/symfony/dependency-injection/releases)
- [Changelog](https://github.com/symfony/dependency-injection/blob/5.4/CHANGELOG.md)
- [Commits](https://github.com/symfony/dependency-injection/compare/v3.4.47...v4.0.15)

---
updated-dependencies:
- dependency-name: symfony/dependency-injection
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

composer.json

@@ -11,7 +11,7 @@
 		"ext-xml": "*",
 		"phpmailer/phpmailer": ">=6.5.0 ~6.0",
 		"symfony/config": "~3.4",
-		"symfony/dependency-injection": "~3.4",
+		"symfony/dependency-injection": "~4.0",
 		"symfony/event-dispatcher": "~3.4",
 		"symfony/http-foundation": ">=3.4.35 ~3.4",
 		"symfony/filesystem": "~3.4",

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": "c967e1466fd2a2effd7f76650bba60d7",
+    "content-hash": "71aa157e0edf3be693eb3e676c88ee5e",
     "packages": [
         {
             "name": "jaxl/jaxl",
@@ -431,25 +431,25 @@
         },
         {
             "name": "symfony/dependency-injection",
-            "version": "v3.4.47",
+            "version": "v4.0.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/dependency-injection.git",
-                "reference": "51d2a2708c6ceadad84393f8581df1dcf9e5e84b"
+                "reference": "36401d55d9be1fddd4e8be983b2a7e0b9a5f29ac"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/dependency-injection/zipball/51d2a2708c6ceadad84393f8581df1dcf9e5e84b",
-                "reference": "51d2a2708c6ceadad84393f8581df1dcf9e5e84b",
+                "url": "https://api.github.com/repos/symfony/dependency-injection/zipball/36401d55d9be1fddd4e8be983b2a7e0b9a5f29ac",
+                "reference": "36401d55d9be1fddd4e8be983b2a7e0b9a5f29ac",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.5.9|>=7.0.8",
+                "php": "^7.1.3",
                 "psr/container": "^1.0"
             },
             "conflict": {
-                "symfony/config": "<3.3.7",
-                "symfony/finder": "<3.3",
+                "symfony/config": "<3.4",
+                "symfony/finder": "<3.4",
                 "symfony/proxy-manager-bridge": "<3.4",
                 "symfony/yaml": "<3.4"
             },
@@ -457,8 +457,8 @@
                 "psr/container-implementation": "1.0"
             },
             "require-dev": {
-                "symfony/config": "~3.3|~4.0",
-                "symfony/expression-language": "~2.8|~3.0|~4.0",
+                "symfony/config": "~3.4|~4.0",
+                "symfony/expression-language": "~3.4|~4.0",
                 "symfony/yaml": "~3.4|~4.0"
             },
             "suggest": {
@@ -469,6 +469,11 @@
                 "symfony/yaml": ""
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.0-dev"
+                }
+            },
             "autoload": {
                 "psr-4": {
                     "Symfony\\Component\\DependencyInjection\\": ""
@@ -494,23 +499,9 @@
             "description": "Symfony DependencyInjection Component",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/dependency-injection/tree/v3.4.47"
+                "source": "https://github.com/symfony/dependency-injection/tree/4.0"
             },
-            "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": "2020-10-24T10:57:07+00:00"
+            "time": "2018-08-01T08:23:45+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -1232,5 +1223,5 @@
         "ext-xml": "*"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.3.0"
 }