bump version to 2021.5.2

packages/insomnia-app/config/config.json

@@ -1,5 +1,5 @@
 {
-  "version": "2021.5.1",
+  "version": "2021.5.2",
   "name": "insomnia",
   "executableName": "insomnia",
   "appId": "com.insomnia.app",
@@ -35,4 +35,4 @@
     "insomnia-plugin-core-themes",
     "insomnia-plugin-kong-bundle"
   ]
-}
+}