Update Sphinx version used for documentation build

(cherry picked from commit da607d6a060ab3c0a32404b1bd5c57899872d1c8)

diff --git a/doc/arm/requirements.txt b/doc/arm/requirements.txt
index b811174f54c2fef410a779f0306f78f5f8493b54..47a43bbf765ad96864a033f7490a2a2301bfcee6 100644 (file)
--- a/doc/arm/requirements.txt
+++ b/doc/arm/requirements.txt
@@ -1,5 +1,3 @@
-# Make Read the Docs use the exact same package versions as in
-# registry.gitlab.isc.org/isc-projects/images/bind9:debian-bookworm-amd64
-Sphinx==7.2.6
+Sphinx==7.3.6
 docutils==0.20.1
 sphinx_rtd_theme==2.0.0