docs: update .all-contributorsrc [skip ci]

allcontributors[bot] · web-flow · commit 6092825b88ec · 2023-03-28T21:07:03.000Z
diff --git a/.all-contributorsrc b/.all-contributorsrc
@@ -35,7 +35,8 @@
         "test",
         "infra",
         "review",
-        "ideas"
+        "ideas",
+        "maintenance"
       ]
     }
   ],
