feat(security): creada clase de configuración PasswordEncoderConfig

src/main/java/com/example/apprecetas/security/config/PasswordEncoderConfig.java

+package com.example.apprecetas.security.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+@Configuration
+public class PasswordEncoderConfig {
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}