Update milvus version to LTS (#23393)

Co-authored-by: crazywoola <427733928@qq.com>

docker/docker-compose-template.yaml

@@ -538,7 +538,7 @@ services:
 
   milvus-standalone:
     container_name: milvus-standalone
-    image: milvusdb/milvus:v2.5.0-beta
+    image: milvusdb/milvus:v2.5.15
     profiles:
       - milvus
     command: [ 'milvus', 'run', 'standalone' ]

docker/docker-compose.yaml

@@ -1087,7 +1087,7 @@ services:
 
   milvus-standalone:
     container_name: milvus-standalone
-    image: milvusdb/milvus:v2.5.0-beta
+    image: milvusdb/milvus:v2.5.15
     profiles:
       - milvus
     command: [ 'milvus', 'run', 'standalone' ]