upgrading to v2.5.1 and removing milvus service key

.github/workflows/pr_integration_tests.yml

@@ -45,10 +45,6 @@ jobs:
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
-      milvus:
-        image: milvus
-        ports:
-          - 19530:19530
     steps:
       - uses: actions/checkout@v4
         with:
@@ -101,7 +97,7 @@ jobs:
           docker run -d -p 6001:6379 -p 6002:6380 -p 6003:6381 -p 6004:6382 -p 6005:6383 -p 6006:6384 --name redis-cluster vishnunair/docker-redis-cluster
       - name: Setup Milvus Cluster
         run: |
-          wget https://github.com/milvus-io/milvus/releases/download/v2.4.20/milvus-standalone-docker-compose.yml -O docker-compose.yml
+          wget https://github.com/milvus-io/milvus/releases/download/v2.5.1/milvus-standalone-docker-compose.yml -O docker-compose.yml
           docker compose up -d
       - name: Test python
         if: ${{ always() }}  # this will guarantee that step won't be canceled and resources won't leak