Update Sphinx-related Python packages

Update Sphinx-related Python packages to their current versions pulled
in by "pip install sphinx-rtd-theme" run in a fresh Debian "bookworm"
container.

diff --git a/doc/arm/requirements.txt b/doc/arm/requirements.txt
index 4afb698dec67cd0d1b74f977999b80376bfb54d2..8d9d05ffb017ba98cfe8b6c5c699f869a5936eac 100644 (file)
--- a/doc/arm/requirements.txt
+++ b/doc/arm/requirements.txt
@@ -1,3 +1,3 @@
-Sphinx==8.2.3
-docutils==0.21.2
-sphinx_rtd_theme==3.0.2
+Sphinx==9.0.4
+docutils==0.22.4
+sphinx_rtd_theme==3.1.0