fix linter

Author: KirillKurdyukov

examples/EntityFrameworkCore.Ydb.Samples/Database.Operations.Tutorial/Program.cs

@@ -438,7 +438,6 @@ static void ReadCSV(HRContext context)
     var employees = new List<Employee>();
     var skills = new List<Skill>();
     var departments = new List<Department>();
-    var profiles = new List<EmployeeProfile>();
 
     using var reader = new StreamReader("data.csv");
 
@@ -484,7 +483,6 @@ static void ReadCSV(HRContext context)
                 Phone = phone,
                 Email = email
             };
-            profiles.Add(profile);
 
             // Create Employee object
             var employee = new Employee

examples/EntityFrameworkCore.Ydb.Samples/Schema.OneToOne/Models.cs

@@ -6,7 +6,7 @@ public class Department
     public required string Name { get; set; }
 
     // Collection navigation containing children
-    public ICollection<Employee> Employees { get; set; }
+    public required ICollection<Employee> Employees { get; set; }
 }
 
 public class Employee