chore(spp_graduation): promote development status to Stable

Author: gonzalesedwin1123

spp_graduation/__manifest__.py

@@ -7,7 +7,7 @@
     "author": "OpenSPP.org",
     "website": "https://github.com/OpenSPP/OpenSPP2",
     "license": "LGPL-3",
-    "development_status": "Beta",
+    "development_status": "Stable",
     "maintainers": ["jeremi", "gonzalesedwin1123", "emjay0921"],
     "depends": [
         "base",