v9.0.0

• Upgrade: Upgrade project to Angular 20
  #608

  Thanks to @Lehoczky

• Enhancement: add a new provideMatSelectSearchOptions() to provide default values
  #604

  Thanks to @Lehoczky

Caution

Breaking Change: @angular/material: <= 16 is not supported anymore, please use ngx-mat-select-search@8.0.6 in that case.
See README.md#compatibility