Fix a json serialization problem during LDAP integration

apollo-portal/pom.xml

@@ -30,6 +30,7 @@
 		<github.path>${project.artifactId}</github.path>
 		<maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
 	</properties>
+
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.security</groupId>

pom.xml

@@ -65,6 +65,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<spring-boot.version>2.6.8</spring-boot.version>
 		<spring-cloud.version>2021.0.2</spring-cloud.version>
+		<spring-security.version>5.7.3</spring-security.version>
 		<jaxb.version>2.3.1</jaxb.version>
 		<javax.activation.version>1.1.1</javax.activation.version>
 		<javax.mail.version>1.6.2</javax.mail.version>
@@ -215,6 +216,14 @@
 				<version>1.2.0</version>
 				<scope>test</scope>
 			</dependency>
+      <!-- Spring-security BOMs -->
+      <dependency>
+        <groupId>org.springframework.security</groupId>
+        <artifactId>spring-security-bom</artifactId>
+        <version>${spring-security.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
 			<!-- declare Spring BOMs in order -->
 			<dependency>
 				<groupId>org.springframework.boot</groupId>