Update pkgs & versions used in recent edit/preview env

requirements.txt

@@ -4,67 +4,55 @@
 #   (moad-docs)$ python3 -m pip list --format=freeze >> requirements.txt
 
 alabaster==0.7.12
-argcomplete==1.12.2
-async-generator==1.10
-attrs==20.3.0
+attrs==21.2.0
 Babel==2.9.0
 bleach==3.3.0
 brotlipy==0.7.0
 certifi==2020.12.5
-cffi==1.14.5
+cffi==1.14.4
 chardet==4.0.0
 colorama==0.4.4
-cryptography==3.4.4
+cryptography==3.3.1
 defusedxml==0.7.1
-distro==1.5.0
 docutils==0.16
 entrypoints==0.3
 idna==2.10
 imagesize==1.2.0
-importlib-metadata==3.7.2
+importlib-metadata==4.0.1
 ipython-genutils==0.2.0
-Jinja2==2.11.3
+Jinja2==2.11.2
 jsonschema==3.2.0
-jupyter-client==6.1.11
 jupyter-core==4.7.1
-jupyterlab-pygments==0.1.2
 MarkupSafe==1.1.1
 mistune==0.8.4
-nbclient==0.5.3
-nbconvert==6.0.7
-nbformat==5.1.2
-nbsphinx==0.8.1
-nest-asyncio==1.4.3
-packaging==20.9
+nbconvert==5.6.0
+nbformat==5.1.3
+nbsphinx==0.8.4
+packaging==20.8
 pandocfilters==1.4.2
-pip==21.0.1
-pipx==0.15.6.0
+pip==21.1.1
 pycparser==2.20
-Pygments==2.8.1
+Pygments==2.7.4
 pyOpenSSL==20.0.1
 pyparsing==2.4.7
 pyrsistent==0.17.3
 PySocks==1.7.1
-python-dateutil==2.8.1
-pytz==2021.1
-pyzmq==22.0.3
+pytz==2020.5
 requests==2.25.1
-setuptools==49.6.0.post20210108
+setuptools==51.3.3.post20210118
 six==1.15.0
-snowballstemmer==2.1.0
-Sphinx==3.5.2
-sphinx-rtd-theme==0.5.1
+snowballstemmer==2.0.0
+Sphinx==4.0.1
+sphinx-rtd-theme==0.5.2
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==1.0.3
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.4
 testpath==0.4.4
-tornado==6.1
 traitlets==5.0.5
-urllib3==1.26.4
-userpath==1.4.1
+urllib3==1.26.2
 webencodings==0.5.1
 wheel==0.36.2
 zipp==3.4.1