fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORK-12817817

Author: snyk-bot

pom.xml

@@ -146,13 +146,13 @@
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-web</artifactId>
-            <version>4.2.12.RELEASE</version>
+            <version>6.4.11</version>
         </dependency>
 
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-config</artifactId>
-            <version>4.2.12.RELEASE</version>
+            <version>6.4.11</version>
         </dependency>
 
         <dependency>