Docs: update dependencies (#265)

* Docs: update dependencies

Documentation build process is failing currently.
This commit should fix it.

* Docs: remove old dependencies

* Docs: pin `Sphinx<6` due to `sphinx-js`

* Docs: pin to proper dependencies

* Docs: let pip to figure it out what are the working versions

* Docs: pin sphinxcontrib-applehelp

* Docs: pin sphinxcontrib-devhelp

* Docs: pin sphinxcontrib-htmlhelp

* Docs: pin Python version

* Docs: increase sphinxcontrib-htmlhelp

* Docs: update dependencies

There was a new release of sphinxcontrib-autoanysrc that works with Sphinx>=5

.readthedocs.yaml

@@ -1,8 +1,9 @@
 version: 2
 
 build:
-  os: ubuntu-20.04
+  os: ubuntu-22.04
   tools:
+    # Python 3.9 is required here since we are using an old version of Sphinx
     python: "3.9"
     nodejs: "16"
 

setup.cfg

@@ -29,9 +29,8 @@ install_requires =
 
 [options.extras_require]
 docs =
-    Jinja2~=2.3
-    MarkupSafe~=2.0.0
-    Sphinx~=4.5.0
-    sphinx_rtd_theme~=1.0.0
-    sphinxcontrib-autoanysrc>=0.1.1
-    sphinx-js~=3.2.1
+    # We can't upgrade Sphinx because of sphinx-js (Sphinx<6)
+    Sphinx<6
+    sphinx_rtd_theme<3
+    sphinxcontrib-autoanysrc<1
+    sphinx-js