Django way to replace quotes on encoding inside html content?

Question

Django

UPD the title has changed...

Способ замены <script></script> на &lt;script&gt;&lt;/script&gt;?

I don’t know how to formulate the question correctly, maybe that’s why I didn’t find the answer myself ...
When looking for an editor for the site, I came across quilljs. A beautiful and lightweight editor, the only problem is that it saves data in its own format using json. For me, this is inconvenient and I want to save pure html in the database, and besides, the editor does not support textarea from the box.
To solve this problem, I made the following design:

var quill = new Quill('#editor', {
    theme: 'snow',
    placeholder: 'Напишите что то...',
  });

  $(document).ready( function() {
    var content = document.getElementById('id_content');
    var qlEditor = document.getElementsByClassName('ql-editor');

    if (content.value === '') {
      // Ести поле textarea пустое, вставлет пробел 
      content.value = ' ';
    } else {
      // При редактировании поста вставляет html
      // с textarea в quill редактор
      $('.ql-editor').html(content.value);
    }
  });
  // Передает html разметку с редактора в textarea
  // при отправке формы
  var form = document.querySelector('form');
  form.onsubmit = function() {
    var content = document.getElementById('id_content');
    content.value = quill.root.innerHTML;
  };

Here, the edited html code is simply taken from the editor and inserted into the textarea when submitting the form, and when editing, the reverse process occurs.
Here actually I also approached a question, there was a problem with safety. For example, you can disable js in the browser or make a POST request and write something to the textarea, for example, include scripts and styles. Since Dajngo renders html like this {{ post.content|safe }}, no escaping occurs and the scripts are simply connected to the page.
Is there any library or example of how to replace brackets < > with encoding only for script and link tags?