Added registration endpoint to whitelist

src/main/java/auth_service/configuration/security/SecurityConfig.java

@@ -34,6 +34,7 @@ public class SecurityConfig {
      */
     private static final String[] WHITE_LIST_URLS = {
             "/api/auth/**",           // Allow login, registration, etc.
+            "/api/registration/**",   // Allow new user registration
             "/actuator/health",       // Allow health checks (e.g., for Docker/Traefik)
             "/actuator/prometheus",   // Allow Prometheus to scrape metrics
             "/error"                  // Default Spring Boot error page routing