upgrade springboot to 2.3.9.RELEASE

upgrade springcloud to Hoxton.SR10

pom.xml

@@ -10,8 +10,8 @@
     <properties>
         <!-- 云平台版本 -->
         <revision>v4.1.0-SNAPSHOT</revision>
-        <spring-boot.version>2.1.18.RELEASE</spring-boot.version>
-        <spring-cloud.version>Greenwich.SR6</spring-cloud.version>
+        <spring-boot.version>2.3.9.RELEASE</spring-boot.version>
+        <spring-cloud.version>Hoxton.SR10</spring-cloud.version>
         <maven-source-version>3.2.1</maven-source-version>
         <maven-compiler-version>3.8.1</maven-compiler-version>
         <maven-surefire-version>2.22.2</maven-surefire-version>
@@ -185,15 +185,10 @@
             <!-- Json Jars end -->
 
             <!-- Swagger Jars start -->
-            <dependency>
-                <groupId>io.springfox</groupId>
-                <artifactId>springfox-swagger2</artifactId>
-                <version>2.9.2</version>
-            </dependency>
             <dependency>
                 <groupId>com.github.xiaoymin</groupId>
-                <artifactId>swagger-bootstrap-ui</artifactId>
-                <version>1.9.6</version>
+                <artifactId>knife4j-spring-boot-starter</artifactId>
+                <version>2.0.8</version>
             </dependency>
             <dependency>
                 <groupId>io.swagger</groupId>