[Snyk] Security upgrade pygments from 2.7.4 to 2.15.0

[robertjwilson]

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:
  • docs/requirements.txt

⚠️ Warning

statsmodels 0.13.5 requires scipy, which is not installed.
statsmodels 0.13.5 requires scipy, which is not installed.
Sphinx 4.0.2 has requirement docutils<0.18,>=0.14, but you have docutils 0.20.1.
sphinx-rtd-theme 0.5.2 has requirement docutils<0.17, but you have docutils 0.20.1.
plotnine 0.8.0 requires scipy, which is not installed.
panel 0.14.4 has requirement setuptools>=42, but you have setuptools 39.0.1.
ncplot 0.3.5 requires jupyter-bokeh, which is not installed.
MetPy 1.2.0 requires pyproj, which is not installed.
MetPy 1.2.0 requires scipy, which is not installed.
datashader 0.14.4 requires scipy, 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-PYGMENTS-5750273	pygments: 2.7.4 -> 2.15.0	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 affected dependencies could be upgraded.

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

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (bb396d4) 80.39% compared to head (db2ab73) 80.39%.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master      #94   +/-   ##
=======================================
  Coverage   80.39%   80.39%           
=======================================
  Files          69       69           
  Lines        7221     7221           
=======================================
  Hits         5805     5805           
  Misses       1416     1416           

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