fix: rename 'uses' workflow

Author: andhreljaKern

.github/workflows/pi_merge.yml

@@ -13,6 +13,6 @@ permissions:
 
 jobs: 
   call-pi-merge-parent-image:
-    uses: code-kern-ai/cicd-deployment-scripts/.github/workflows/pi_merge_parent_image.yml@dev
+    uses: code-kern-ai/cicd-deployment-scripts/.github/workflows/pi_merge_submodule.yml@dev
     if: ${{ github.event.pull_request.merged }}
     secrets: inherit