fix: bumping indexer version to 2.1.x (#1708)

Author: pedrorezende

apps/namadillo/src/compatibility.json

@@ -1,4 +1,4 @@
 {
   "keychain": "0.4.x",
-  "indexer": "2.0.x"
+  "indexer": "2.1.x"
 }