upgrade

vendor/myclabs/deep-copy/composer.json

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+{
+    "name": "myclabs/deep-copy",
+    "description": "Create deep copies (clones) of your objects",
+    "license": "MIT",
+    "type": "library",
+    "keywords": [
+        "clone",
+        "copy",
+        "duplicate",
+        "object",
+        "object graph"
+    ],
+    "require": {
+        "php": "^7.1 || ^8.0"
+    },
+    "require-dev": {
+        "doctrine/collections": "^1.6.8",
+        "doctrine/common": "^2.13.3 || ^3.2.2",
+        "phpspec/prophecy": "^1.10",
+        "phpunit/phpunit": "^7.5.20 || ^8.5.23 || ^9.5.13"
+    },
+    "conflict": {
+        "doctrine/collections": "<1.6.8",
+        "doctrine/common": "<2.13.3 || >=3 <3.2.2"
+    },
+    "autoload": {
+        "psr-4": {
+            "DeepCopy\\": "src/DeepCopy/"
+        },
+        "files": [
+            "src/DeepCopy/deep_copy.php"
+        ]
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "DeepCopyTest\\": "tests/DeepCopyTest/",
+            "DeepCopy\\": "fixtures/"
+        }
+    },
+    "config": {
+        "sort-packages": true
+    }
+}