Revert "Descente à la version 2.0 de ocramius/proxy-manager pour rester à la version 7.0 de PHP."

composer.json

@@ -9,7 +9,7 @@
         "beberlei/assert":                              "^2.9",
         "doctrine/doctrine-orm-module":                 "*",
         "mpdf/mpdf":                                    "^7.1",
-        "ocramius/proxy-manager":                       "^2.0.0",
+        "ocramius/proxy-manager":                       "^2.2",
         "zendframework/zend-config":                    "^3.2",
         "zendframework/zend-console":                   "^2.8",
         "zendframework/zend-eventmanager":              "^3.2",