update 0.7.0 version

Signed-off-by: Zhiru Zhu <zzhu@fandm.edu>

pom.xml

@@ -25,7 +25,7 @@
 
     <groupId>io.milvus</groupId>
     <artifactId>milvus-sdk-java</artifactId>
-    <version>0.7.0-SNAPSHOT</version>
+    <version>0.7.0</version>
     <packaging>jar</packaging>
 
     <name>io.milvus:milvus-sdk-java</name>