Update ajna-watcher version in ajna stack (#824)

Part of [Regenerate ajna watcher with updated subgraph config](https://www.notion.so/Regenerate-ajna-watcher-with-updated-subgraph-config-c9bbecb033024c13a7515c7f1efc3363)

Reviewed-on: https://git.vdb.to/cerc-io/stack-orchestrator/pulls/824
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack_orchestrator/data/stacks/ajna/stack.yml

@@ -2,7 +2,7 @@ version: "1.0"
 name: ajna
 description: "Ajna watcher stack"
 repos:
-  - git.vdb.to/cerc-io/ajna-watcher-ts@v0.1.4
+  - git.vdb.to/cerc-io/ajna-watcher-ts@v0.1.5
 containers:
   - cerc/watcher-ajna
 pods: