fix!: Start requiring PHP 8.0 or higher, drop outdated Stringable polyfill

Author: ralflang

.horde.yml

@@ -36,9 +36,8 @@ license:
   uri: http://www.horde.org/licenses/bsd
 dependencies:
   required:
-    php: ^7.4 || ^8
+    php: ^8
     composer:
-      php-extended/polyfill-php80-stringable: ^1
       psr/log: ^1 || ^2 || ^3
       horde/constraint: ^3
       horde/exception: ^3

composer.json

@@ -22,16 +22,9 @@
             "role": "maintainer"
         }
     ],
-    "time": "2022-11-16",
-    "repositories": [
-        {
-            "type": "composer",
-            "url": "https://horde-satis.maintaina.com"
-        }
-    ],
+    "time": "2025-04-30",
     "require": {
-        "php": "^7.4 || ^8",
-        "php-extended/polyfill-php80-stringable": "^1",
+        "php": "^8",
         "psr/log": "^1 || ^2 || ^3",
         "horde/constraint": "^3 || dev-FRAMEWORK_6_0",
         "horde/exception": "^3 || dev-FRAMEWORK_6_0",