docs: Bump docs dependency versions (sphinx, breathe, etc)

.github/workflows/docs.yml

@@ -80,10 +80,10 @@ jobs:
             nametag: docs-linux
             runner: ubuntu-latest
             cxx_std: 17
-            python_ver: "3.11"
+            python_ver: "3.12"
             build_docs: 1
             skip_build: 1
             skip_tests: 1
             setenvs: export EXTRA_DEP_PACKAGES="doxygen sphinx-doc"
-                            PIP_INSTALLS="sphinx breathe==4.34.0 sphinx-tabs furo==2022.6.21 myst-parser linkify-it-py"
+                            PIP_INSTALLS="sphinx>=9.1 breathe>=5.1 sphinx-tabs>=3.5 furo>=2025.12.19 myst-parser>=5.1"
                             SKIP_SYSTEM_DEPS_INSTALL=1

.readthedocs.yaml

@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.11"
+    python: "3.12"
 
 
 # Build documentation with Sphinx

src/doc/requirements.txt

@@ -1,6 +1,5 @@
-sphinx >= 5.0
-breathe == 4.34.0
-sphinx-tabs
-furo==2022.6.21
-myst-parser
-linkify
+sphinx >= 9.1
+breathe >= 5.1
+sphinx-tabs >= 3.5
+furo >= 2025.12.19
+myst-parser >= 5.1