refactor: 升级依赖包

backend/pom.xml

@@ -64,8 +64,9 @@
             <artifactId>spring-boot-starter-aop</artifactId>
         </dependency>
         <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-jetty</artifactId>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>4.0.1</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>