fix: removed contradictive @NotNull preventing to add data to database.

MyINPulse-back/src/main/java/enseirb/myinpulse/model/Report.java

@@ -4,14 +4,12 @@ import jakarta.persistence.*;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.Table;
-import jakarta.validation.constraints.NotNull;
 
 @Entity
 @Table(name = "report")
 public class Report {
 
     @Id
-    @NotNull
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long idReport;