Bump minimum version of PHP to 8.1

Author: nicolas-grekas

Tests/Store/MongoDbStoreTest.php

@@ -121,7 +121,6 @@ public function testUriPrecedence()
         $storeReflection = new \ReflectionObject($store);
 
         $optionsProperty = $storeReflection->getProperty('options');
-        $optionsProperty->setAccessible(true);
         $options = $optionsProperty->getValue($store);
 
         $this->assertSame('test_uri', $options['database']);
@@ -160,7 +159,6 @@ public function testUriCollectionStrip(string $uri, array $options, string $driv
         $storeReflection = new \ReflectionObject($store);
 
         $uriProperty = $storeReflection->getProperty('uri');
-        $uriProperty->setAccessible(true);
         $uri = $uriProperty->getValue($store);
         $this->assertSame($driverUri, $uri);
     }

composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=8.0.2",
+        "php": ">=8.1",
         "psr/log": "^1|^2|^3"
     },
     "require-dev": {