Update version with march/april release

__manifest__.py

 {
     "name": "CG SCOP - Gestion Contacts",
     "summary": "CG SCOP - Gestion des contacts",
-    "version": "12.0.1.0.1",
-    "development_status": "Beta",
+    "version": "12.0.1.1.0",
+    "development_status": "Production/Stable",
     "author": "Le Filament",
-    "maintainers": ["remi-filament"],
     "license": "AGPL-3",
     "application": False,
     "installable": True,