update doc requirements with sphinx v4 (#201)

Signed-off-by: cosmicBboy <niels.bantilan@gmail.com>

flyteidl/doc-requirements.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
+# This file is autogenerated by pip-compile with python 3.9
 # To update, run:
 #
 #    pip-compile doc-requirements.in
@@ -15,19 +15,19 @@ beautifulsoup4==4.9.3
     #   sphinx-material
 certifi==2021.5.30
     # via requests
-chardet==4.0.0
+charset-normalizer==2.0.3
     # via requests
 commonmark==0.9.1
     # via recommonmark
 css-html-js-minify==2.5.5
     # via sphinx-material
-docutils==0.16
+docutils==0.17.1
     # via
     #   recommonmark
     #   sphinx
 git+git://github.com/flyteorg/furo@main
     # via -r doc-requirements.in
-idna==2.10
+idna==3.2
     # via requests
 imagesize==1.2.0
     # via sphinx
@@ -39,7 +39,7 @@ markdown==3.3.4
     # via sphinx-markdown-tables
 markupsafe==2.0.1
     # via jinja2
-packaging==20.9
+packaging==21.0
     # via sphinx
 pygments==2.9.0
     # via
@@ -53,15 +53,15 @@ pytz==2021.1
     # via babel
 recommonmark==0.7.1
     # via -r doc-requirements.in
-requests==2.25.1
+requests==2.26.0
     # via sphinx
 six==1.16.0
     # via sphinx-code-include
 snowballstemmer==2.1.0
     # via sphinx
 soupsieve==2.2.1
     # via beautifulsoup4
-sphinx==3.5.4
+sphinx==4.1.2
     # via
     #   -r doc-requirements.in
     #   furo
@@ -73,13 +73,13 @@ sphinx==3.5.4
     #   sphinx-prompt
 sphinx-code-include==1.1.1
     # via -r doc-requirements.in
-sphinx-copybutton==0.3.3
+sphinx-copybutton==0.4.0
     # via -r doc-requirements.in
 sphinx-fontawesome==0.0.6
     # via -r doc-requirements.in
 sphinx-markdown-tables==0.0.15
     # via -r doc-requirements.in
-sphinx-material==0.0.32
+sphinx-material==0.0.34
     # via -r doc-requirements.in
 sphinx-prompt==1.4.0
     # via -r doc-requirements.in