Blockquote css is missing in ckeditor.

@adarshv It is because bootstrap 5 styles files is not including in ckEditor.

@adarshv
i am making correct here as you need to add class "blockquote" as below example.

<blockquote class="blockquote">
  <p>A well-known quote, contained in a blockquote element.</p>
</blockquote>