Make Profile.Markings db column jsonb (#7947)

Content.Server.Database/Migrations/Sqlite/SqliteServerDbContextModelSnapshot.cs

@@ -1,5 +1,6 @@
 // <auto-generated />
 using System;
+using System.Text.Json;
 using Content.Server.Database;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
@@ -553,9 +554,8 @@ namespace Content.Server.Database.Migrations.Sqlite
                         .HasColumnType("TEXT")
                         .HasColumnName("hair_name");
 
-                    b.Property<string>("Markings")
-                        .IsRequired()
-                        .HasColumnType("TEXT")
+                    b.Property<JsonDocument>("Markings")
+                        .HasColumnType("jsonb")
                         .HasColumnName("markings");
 
                     b.Property<int>("PreferenceId")