Composer: Downgrade symfony/var-exporter to ^7.0

Required for Doctrine ORM 3.x proxy factory compatibility.

Author: felixure

composer.json

@@ -23,10 +23,11 @@
     "contributte/phpstan": "^0.2.0",
     "contributte/qa": "^0.4",
     "contributte/tester": "^0.3.0",
-    "symfony/console": "^7.1.8 ",
-    "symfony/cache": "^7.1.9",
-    "monolog/monolog": "^3.8.0",
     "mockery/mockery": "^1.6.12",
+    "monolog/monolog": "^3.8.0",
+    "symfony/cache": "^7.1.9",
+    "symfony/console": "^7.1.8 ",
+    "symfony/var-exporter": "^7.0",
     "tracy/tracy": "^2.10.3"
   },
   "conflict": {