Bump symfony/process from 4.2.9 to 4.3.0

Bumps [symfony/process](https://github.com/symfony/process) from 4.2.9 to 4.3.0.
- [Release notes](https://github.com/symfony/process/releases)
- [Changelog](https://github.com/symfony/process/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/process/compare/v4.2.9...v4.3.0)

composer.lock

@@ -890,16 +890,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v4.2.9",
+            "version": "v4.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "57f11a07b34f009ef64a3f95ad218f895ad95374"
+                "reference": "a5e3dd4e93a364668034a3cb6efa963d0b33ab45"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/57f11a07b34f009ef64a3f95ad218f895ad95374",
+                "url": "https://api.github.com/repos/symfony/process/zipball/a5e3dd4e93a364668034a3cb6efa963d0b33ab45",
-                "reference": "57f11a07b34f009ef64a3f95ad218f895ad95374",
+                "reference": "a5e3dd4e93a364668034a3cb6efa963d0b33ab45",
                 "shasum": ""
             },
             "require": {
@@ -908,7 +908,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.2-dev"
+                    "dev-master": "4.3-dev"
                 }
             },
             "autoload": {
@@ -935,7 +935,7 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2019-05-26T20:47:34+00:00"
+            "time": "2019-05-26T20:47:49+00:00"
         },
         {
             "name": "symfony/service-contracts",