Bump Sphinx version to 5.3.0

Make the Sphinx version listed in doc/arm/requirements.txt match the
version currently used in GitLab CI, so that Read the Docs builds the
documentation using the same Python software versions as those used in
GitLab CI.

(cherry picked from commit a8f0ab7df6e8dc558e4ad670a02735e950b85124)

diff --git a/doc/arm/requirements.txt b/doc/arm/requirements.txt
index e9ea383a8cfa7c26e23b48a56212fe26a5f736cc..31c4a447598e942ea60af135a4dc1e98622c6908 100644 (file)
--- a/doc/arm/requirements.txt
+++ b/doc/arm/requirements.txt
@@ -1,5 +1,5 @@
 # Make Read the Docs use the exact same package versions as in
 # registry.gitlab.isc.org/isc-projects/images/bind9:debian-bullseye-amd64
-Sphinx==4.5.0
+Sphinx==5.3.0
 docutils==0.17.1
 sphinx_rtd_theme==1.0.0