Spring Security: Upgrading the deprecated WebSecurityConfigurerAdapter (#12540)

* add SecurityFilterChain application in spring security web boot 4

* pmd violation

* fix: pom description

* remove unused code, format

* make tests grouped logically

* add missing case for user role

* rename package to lower case

spring-security-modules/pom.xml

@@ -32,6 +32,7 @@
         <module>spring-security-web-boot-1</module>
         <module>spring-security-web-boot-2</module>
         <module>spring-security-web-boot-3</module>
+        <module>spring-security-web-boot-4</module>
         <module>spring-security-web-digest-auth</module>
         <module>spring-security-web-login</module>
         <module>spring-security-web-login-2</module>