Pin doc-requirements.txt versions
Hopefully dependabot can take care of them
# Note that there is also a Pipfile for this project if you are updating this
# file do not forget to update the Pipfile accordingly
-sphinx>=1.4, !=1.5.4
-recommonmark
-sphinxcontrib-autoprogram
-pydata-sphinx-theme
+sphinx==4.0.2
+recommonmark==0.7.1
+sphinxcontrib-autoprogram==0.1.7
+pydata-sphinx-theme==0.6.3
