[skip ci] Set helm image as master-latest (#8965)

Signed-off-by: Nzhuwenxing <wenxing.zhu@zilliz.com>

.github/workflows/network-partition-chaos-test.yaml

@@ -55,7 +55,7 @@ jobs:
         run: |
           helm repo add milvus https://milvus-io.github.io/milvus-helm
           helm repo update
-          helm install chaos-testing milvus/milvus --set cluster.enabled=true -n=chaos-testing
+          helm install chaos-testing milvus/milvus --set cluster.enabled=true --set image.all.repository=milvusdb/milvus-dev --set image.all.tag=master-latest -n=chaos-testing
           kubectl get pods -n chaos-testing
           sleep 60s
           kubectl get pods -n chaos-testing

.github/workflows/pod-kill-chaos-test.yaml

@@ -56,7 +56,7 @@ jobs:
         run: |
           helm repo add milvus https://milvus-io.github.io/milvus-helm
           helm repo update
-          helm install milvus-chaos milvus/milvus --set cluster.enabled=true -n=chaos-testing
+          helm install milvus-chaos milvus/milvus --set cluster.enabled=true --set image.all.repository=milvusdb/milvus-dev --set image.all.tag=master-latest -n=chaos-testing
           kubectl get pods -n chaos-testing
           sleep 60s
           kubectl get pods -n chaos-testing