Merge branch '83-add-a-requirement-for-the-python-tools-needed-by-shpinx' into '1.4'

Resolve "add a requirement for the python tools needed by shpinx"

See merge request fusiondirectory/dev-manual!136

.readthedocs.yaml

@@ -30,6 +30,6 @@ sphinx:
 # Optional but recommended, declare the Python requirements required
 # to build your documentation
 # See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
-# python:
-#    install:
-#    - requirements: docs/requirements.txt
+python:
+  install:
+    - requirements: source/requirements.txt

source/requirements.txt

+# Defining the exact version will make sure things don't break
+sphinx==5.3.0
+sphinx_rtd_theme==1.1.1
+readthedocs-sphinx-search==0.1.1