Update composer.json for PHP 7.2

vendor/ezyang/htmlpurifier/composer.json

@@ -13,10 +13,11 @@
         }
     ],
     "require": {
-        "php": ">=5.2"
+        "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0"
     },
     "require-dev": {
-        "simpletest/simpletest": "dev-master#72de02a7b80c6bb8864ef9bf66d41d2f58f826bd"
+        "cerdic/css-tidy": "^1.7 || ^2.0",
+        "simpletest/simpletest": "dev-master"
     },
     "autoload": {
         "psr-0": { "HTMLPurifier": "library/" },
@@ -24,5 +25,20 @@
         "exclude-from-classmap": [
             "/library/HTMLPurifier/Language/"
         ]
-    }
+    },
+    "suggest": {
+        "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+        "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+        "ext-bcmath": "Used for unit conversion and imagecrash protection",
+        "ext-tidy": "Used for pretty-printing HTML"
+    },
+    "config": {
+        "sort-packages": true
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/ezyang/simpletest.git"
+        }
+    ]
 }