refactor: add ordering by ServiceName and Key in GetAllAsync method

HrynCo.NotificationService.DAL.EF/Repositories/EmailTemplateRepository.cs

@@ -16,6 +16,7 @@ internal sealed class EmailTemplateRepository
     public async Task<IReadOnlyList<EmailTemplate>> GetAllAsync(CancellationToken ct = default)
     {
         List<EmailTemplateEntity> entities = await EfRepository.Get()
+            .OrderBy(x => x.ServiceName).ThenBy(x => x.Key)
             .AsNoTracking()
             .ToListAsync(ct);
         return entities.Select(MapToDomain).ToList();