Add update lambda action stub

Author: khhan

.github/workflows/deploy-lambda.yml

@@ -25,4 +25,7 @@ jobs:
       run: docker build -t [TODO] .
 
     - name: Push Docker Image to ECR
-      run: docker push ${{ steps.login-ecr.outputs.registry }}/[TODO]:latest
+      run: docker push ${{ steps.login-ecr.outputs.registry }}/[TODO]:latest
+
+    - name: Update lambda funcion
+    # TODO