release strict pinning

Author: basnijholt

docs/environment.yml

@@ -7,13 +7,13 @@ dependencies:
   - python
   - sortedcollections
   - scikit-optimize
-  - scikit-learn <=0.23.1  # because of https://github.com/scikit-optimize/scikit-optimize/issues/931, remove dep when fixed
+  - scikit-learn
   - scipy
   - holoviews
   - bokeh
   - plotly
   - ipywidgets
-  - jupyter_sphinx ==0.2.3 # because of https://github.com/jupyter/jupyter-sphinx/issues/126
+  - jupyter_sphinx
   - atomicwrites
   - sphinx_fontawesome
   - sphinx