Merge pull request #19 from zilliztech/dev

upgrade logback to resolve dependence vulnerability

Author: nianliuu

pom.xml

@@ -36,7 +36,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.4.11</version> <!-- Check for the latest version -->
+            <version>1.4.14</version> <!-- Check for the latest version -->
         </dependency>
         <dependency>
         <groupId>io.milvus</groupId>