[Snyk] Security upgrade lxml from 4.9.0 to 4.9.1

[eapolinario]

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.
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 PyWavelets, which is not installed.
ImageHash 4.2.1 requires pillow, which is not installed.
ImageHash 4.2.1 requires scipy, which is not installed.
google-auth 2.9.0 requires rsa, which is not installed.
flyteidl 1.1.7 requires protobuf, which is not installed.
flyteidl 1.1.7 requires googleapis-common-protos, 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
	658/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 5.3	NULL Pointer Dereference SNYK-PYTHON-LXML-2940874	lxml: 4.9.0 -> 4.9.1	No	Proof of Concept

(*) 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.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report

🛠 Adjust project settings

📚 Read more about Snyk's upgrade and patch logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Learn about vulnerability in an interactive lesson of Snyk Learn.

[codecov]

Codecov Report

Merging #1095 (20d46e4) into master (3137609) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1095   +/-   ##
=======================================
  Coverage   86.90%   86.90%           
=======================================
  Files         269      269           
  Lines       25144    25144           
  Branches     2834     2834           
=======================================
  Hits        21851    21851           
  Misses       2823     2823           
  Partials      470      470           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3137609...20d46e4. Read the comment docs.