[Snyk] Security upgrade mistune from 0.8.4 to 2.0.3

[EngHabu]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `pip` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • doc-requirements.txt

⚠️ Warning

protoc-gen-swagger 0.1.0 requires protobuf, which is not installed.
notebook 5.7.13 requires terminado, which is not installed.
nbformat 4.4.0 requires jsonschema, which is not installed.
nbconvert 5.6.1 has requirement mistune<2,>=0.8.1, but you have mistune 2.0.3.
missingno 0.5.1 requires scipy, which is not installed.
missingno 0.5.1 requires seaborn, which is not installed.
jupyter 1.0.0 requires qtconsole, which is not installed.
jupyter 1.0.0 requires jupyter-console, which is not installed.
ipython 5.10.0 requires simplegeneric, which is not installed.
ImageHash 4.2.1 requires scipy, which is not installed.
ImageHash 4.2.1 requires pillow, which is not installed.
ImageHash 4.2.1 requires PyWavelets, which is not installed.
google-auth 2.10.0 requires rsa, which is not installed.
flyteidl 1.1.12 requires googleapis-common-protos, which is not installed.
flyteidl 1.1.12 requires protobuf, which is not installed.
docker-image-py 0.1.12 requires regex, which is not installed.

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	479/1000 Why? Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-MISTUNE-2940625	mistune: 0.8.4 -> 2.0.3	No	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the effected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

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[codecov[bot]]

Codecov Report

Merging #1137 (3ed9280) into master (9792893) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1137   +/-   ##
=======================================
  Coverage   68.38%   68.38%           
=======================================
  Files         288      288           
  Lines       25963    25963           
  Branches     2899     2899           
=======================================
  Hits        17756    17756           
  Misses       7728     7728           
  Partials      479      479           

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