加回 apache-commons-io 包依赖，office组件中有依赖，后续再统一吧

server/pom.xml

@@ -56,12 +56,6 @@
             <groupId>cn.keking</groupId>
             <artifactId>office-plugin</artifactId>
             <version>1.0-SNAPSHOT</version>
-            <exclusions>
-                <exclusion>
-                    <artifactId>commons-io</artifactId>
-                    <groupId>commons-io</groupId>
-                </exclusion>
-            </exclusions>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>