Fix 5.3 build

composer.json

@@ -37,7 +37,7 @@
         "symfony/process": "^2.7 || ^3.0 || ^4.0 || ^5.0"
     },
     "conflict": {
-        "symfony/console": "2.8.38"
+        "symfony/console": "2.8.38",
         "symfony/phpunit-bridge": "3.4.40"
     },
     "require-dev": {

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": "cc6f9640996dfad00a5b03a8be01a571",
+    "content-hash": "cb76dc8e228d462d248c09f0051da364",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -365,20 +365,20 @@
         },
         {
             "name": "seld/jsonlint",
-            "version": "1.7.2",
+            "version": "1.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/jsonlint.git",
-                "reference": "e2e5d290e4d2a4f0eb449f510071392e00e10d19"
+                "reference": "ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/jsonlint/zipball/e2e5d290e4d2a4f0eb449f510071392e00e10d19",
+                "url": "https://api.github.com/repos/Seldaek/jsonlint/zipball/ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1",
-                "reference": "e2e5d290e4d2a4f0eb449f510071392e00e10d19",
+                "reference": "ff2aa5420bfbc296cf6a0bc785fa5b35736de7c1",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3 || ^7.0"
+                "php": "^5.3 || ^7.0 || ^8.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
@@ -412,9 +412,19 @@
             ],
             "support": {
                 "issues": "https://github.com/Seldaek/jsonlint/issues",
-                "source": "https://github.com/Seldaek/jsonlint/tree/1.7.2"
+                "source": "https://github.com/Seldaek/jsonlint/tree/master"
             },
-            "time": "2019-10-24T14:27:39+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/Seldaek",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/seld/jsonlint",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-04-30T19:05:18+00:00"
         },
         {
             "name": "seld/phar-utils",
@@ -946,6 +956,10 @@
                 "constructor",
                 "instantiate"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/instantiator/issues",
+                "source": "https://github.com/doctrine/instantiator/tree/master"
+            },
             "time": "2015-06-14T21:17:01+00:00"
         },
         {
@@ -995,6 +1009,10 @@
                     "email": "mike.vanriel@naenius.com"
                 }
             ],
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionDocBlock/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/release/2.x"
+            },
             "time": "2016-01-25T08:17:30+00:00"
         },
         {
@@ -1126,6 +1144,10 @@
                 "compare",
                 "equality"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/comparator/issues",
+                "source": "https://github.com/sebastianbergmann/comparator/tree/1.2"
+            },
             "time": "2017-01-29T09:50:25+00:00"
         },
         {
@@ -1178,6 +1200,10 @@
             "keywords": [
                 "diff"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/diff/issues",
+                "source": "https://github.com/sebastianbergmann/diff/tree/1.4"
+            },
             "time": "2017-05-22T07:24:03+00:00"
         },
         {
@@ -1245,6 +1271,10 @@
                 "export",
                 "exporter"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/exporter/issues",
+                "source": "https://github.com/sebastianbergmann/exporter/tree/master"
+            },
             "time": "2016-11-19T08:54:04+00:00"
         },
         {
@@ -1298,6 +1328,10 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/recursion-context/issues",
+                "source": "https://github.com/sebastianbergmann/recursion-context/tree/master"
+            },
             "time": "2016-11-19T07:33:16+00:00"
         },
         {