Normalize the case of the SimpleXML requirement (#1881)

Author: stof

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 ### Changed
 
+- Normalize the composer requirements
 - Sort exception alphabetically.
 
 ## 1.25.0

composer.json

@@ -12,9 +12,9 @@
     ],
     "require": {
         "php": "^7.2.5 || ^8.0",
-        "ext-SimpleXML": "*",
         "ext-hash": "*",
         "ext-json": "*",
+        "ext-simplexml": "*",
         "psr/cache": "^1.0 || ^2.0 || ^3.0",
         "psr/log": "^1.0 || ^2.0 || ^3.0",
         "symfony/deprecation-contracts": "^2.1 || ^3.0",