Removed PHP 7.3 support, upgraded PHPUnit, removed Prophecy mocking/s…

…tubbing

composer.json

@@ -24,7 +24,7 @@
         },
         "sort-packages": true,
         "platform": {
-            "php": "7.3.99"
+            "php": "7.4.99"
         }
     },
     "extra": {
@@ -34,7 +34,7 @@
         }
     },
     "require": {
-        "php": "^7.3 || ~8.0.0 || ~8.1.0",
+        "php": "^7.4 || ~8.0.0 || ~8.1.0",
         "psr/http-factory": "^1.0",
         "psr/http-message": "^1.0"
     },
@@ -44,10 +44,9 @@
         "ext-gd": "*",
         "ext-libxml": "*",
         "http-interop/http-factory-tests": "^0.9.0",
-        "laminas/laminas-coding-standard": "~2.4.0",
+        "laminas/laminas-coding-standard": "^2.4.0",
         "php-http/psr7-integration-tests": "^1.1.1",
-        "phpspec/prophecy-phpunit": "^2.0",
-        "phpunit/phpunit": "^9.5",
+        "phpunit/phpunit": "^9.5.23",
         "psalm/plugin-phpunit": "^0.17.0",
         "vimeo/psalm": "^4.24.0"
     },
@@ -56,7 +55,6 @@
         "psr/http-message-implementation": "1.0"
     },
     "conflict": {
-        "phpspec/prophecy": "<1.9.0",
         "zendframework/zend-diactoros": "*"
     },
     "autoload": {

psalm-baseline.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="4.24.0@06dd975cb55d36af80f242561738f16c5f58264f">
+<files psalm-version="4.26.0@6998fabb2bf528b65777bf9941920888d23c03ac">
   <file src="src/CallbackStream.php">
     <ImplementedReturnTypeMismatch occurrences="1">
       <code>null|callable</code>