fix: add @JsonIgnore to Piloto and Escuderia to prevent circular refs

backend/src/main/java/es/tatvil/formula1/model/Escuderia.java

@@ -2,6 +2,7 @@ package es.tatvil.formula1.model;
 
 import java.util.List;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
 import lombok.*;
 
@@ -21,6 +22,7 @@ public class Escuderia {
     private String pais;
     private String motor;
 
+    @JsonIgnore
     @OneToMany(mappedBy = "escuderia")
     private List<PilotoEscuderia> pilotosEscuderia;
 	}

backend/src/main/java/es/tatvil/formula1/model/Piloto.java

@@ -2,7 +2,7 @@ package es.tatvil.formula1.model;
 
 import jakarta.persistence.*;
 import lombok.*;
-
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import java.time.LocalDate;
 import java.util.List;
 
@@ -28,6 +28,7 @@ public class Piloto {
     private Integer numero;
     private String codigo;
     
+    @JsonIgnore
     @OneToMany(mappedBy = "piloto")
     private List<PilotoEscuderia> pilotosEscuderia;
 }