build(deps): bump pypandoc from 1.15 to 1.16.2 in /requirements (#2744)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/requirements_docs.txt

@@ -5,7 +5,7 @@ imageio==2.37.0
 imageio-ffmpeg==0.6.0
 jupyter_sphinx==0.5.3
 nbsphinx==0.9.5
-pypandoc==1.15
+pypandoc==1.16.2
 pytest-sphinx==0.6.3
 pyvista==0.46.4
 sphinx==8.2.3