build: bump the docs-deps group across 1 directory with 2 updates (#139)

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

Author: dependabot[bot]

doc/requirements.txt

@@ -8,14 +8,14 @@ sphinx-autodoc-typehints==3.5.2
 sphinxcontrib-websupport==2.0.0
 sphinx-copybutton==0.5.2
 sphinxemoji==0.3.1
-sphinx-gallery==0.19.0
+sphinx-gallery==0.20.0
 sphinx-notfound-page==1.1.0
 imageio==2.37.2
 imageio-ffmpeg==0.6.0
 jupyter_sphinx==0.5.3
 jupyterlab>=3.2.8
 matplotlib==3.10.7
-panel==1.8.3
+panel==1.8.4
 plotly==6.5.0
 pythreejs==2.4.2
 pillow==12.0.0