changes.txt: retrospectively mark #4496 as fixed in 1.26.1.

Author: julian-smith-artifex-com

changes.txt

@@ -33,6 +33,7 @@ Change Log
   * **Fixed** `4520 <https://github.com/pymupdf/PyMuPDF/issues/4520>`_: show_pdf_page does not like empty pages created by new_page
   * **Fixed** `4524 <https://github.com/pymupdf/PyMuPDF/issues/4524>`_: fitz.get_text ignores 'pages' kwarg
   * **Fixed** `4412 <https://github.com/pymupdf/PyMuPDF/issues/4412>`_: Regression? Spurious error? in insert_pdf in v1.25.4
+  * **Fixed** `4496 <https://github.com/pymupdf/PyMuPDF/issues/4496>`_: pymupdf4llm with pymupdfpro
 
 * Other: