fix(deps): update dependency symfony/flex to v1.16.3

composer.lock

@@ -3100,16 +3100,16 @@
         },
         {
             "name": "symfony/flex",
-            "version": "v1.15.4",
+            "version": "v1.16.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/flex.git",
-                "reference": "9a22ef2a75609a4d3717db784d923a7a6b347bc5"
+                "reference": "f05406b33681409b83285f4d2ff4efbca7c55b03"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/flex/zipball/9a22ef2a75609a4d3717db784d923a7a6b347bc5",
-                "reference": "9a22ef2a75609a4d3717db784d923a7a6b347bc5",
+                "url": "https://api.github.com/repos/symfony/flex/zipball/f05406b33681409b83285f4d2ff4efbca7c55b03",
+                "reference": "f05406b33681409b83285f4d2ff4efbca7c55b03",
                 "shasum": ""
             },
             "require": {
@@ -3120,13 +3120,13 @@
                 "composer/composer": "^1.0.2|^2.0",
                 "symfony/dotenv": "^4.4|^5.0",
                 "symfony/filesystem": "^4.4|^5.0",
-                "symfony/phpunit-bridge": "^4.4|^5.0",
+                "symfony/phpunit-bridge": "^4.4.12|^5.0",
                 "symfony/process": "^3.4|^4.4|^5.0"
             },
             "type": "composer-plugin",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "1.13-dev"
+                    "dev-main": "1.16-dev"
                 },
                 "class": "Symfony\\Flex\\Flex"
             },
@@ -3148,7 +3148,7 @@
             "description": "Composer plugin for Symfony",
             "support": {
                 "issues": "https://github.com/symfony/flex/issues",
-                "source": "https://github.com/symfony/flex/tree/v1.15.4"
+                "source": "https://github.com/symfony/flex/tree/v1.16.3"
             },
             "funding": [
                 {
@@ -3164,7 +3164,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-09-13T14:49:33+00:00"
+            "time": "2021-09-28T17:00:52+00:00"
         },
         {
             "name": "symfony/framework-bundle",