Update maintained versions file

Author: GromNaN

.doctrine-project.json

@@ -5,11 +5,29 @@
     "slug": "mongodb-odm",
     "docsSlug": "doctrine-mongodb-odm",
     "versions": [
+        {
+            "name": "2.12",
+            "branchName": "2.12.x",
+            "slug": "2.12",
+            "upcoming": true,
+            "aliases": [
+                "2.12.x"
+            ]
+        },
+        {
+            "name": "2.11",
+            "branchName": "2.11.x",
+            "slug": "latest",
+            "current": true,
+            "aliases": [
+                "2.11.x"
+            ]
+        },
         {
             "name": "2.10",
             "branchName": "2.10.x",
-            "slug": "latest",
-            "upcoming": true,
+            "slug": "2.10",
+            "maintained": false,
             "aliases": [
                 "2.10.x"
             ]
@@ -18,10 +36,8 @@
             "name": "2.9",
             "branchName": "2.9.x",
             "slug": "2.9",
-            "current": true,
+            "maintained": false,
             "aliases": [
-                "current",
-                "stable",
                 "2.9.x"
             ]
         },