[Snyk] Security upgrade pygments from 2.5.2 to 2.7.4

[a-luna]

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:
  • requirements-dev.txt

⚠️ Warning

virtualenv 20.25.1 has requirement distlib<1,>=0.3.7, but you have distlib 0.3.4.
virtualenv 20.25.1 has requirement filelock<4,>=3.12.2, but you have filelock 3.7.1.
virtualenv 20.25.1 has requirement platformdirs<5,>=3.9.1, but you have platformdirs 2.5.2.
virtualenv 20.25.1 has requirement importlib-metadata>=6.6; python_version < "3.8", but you have importlib-metadata 4.12.0.
ipykernel 6.15.0 requires ipython, which is not installed.
ipdb 0.13.9 requires ipython, which is not installed.
flake8 4.0.1 has requirement importlib-metadata<4.3; python_version < "3.8", but you have importlib-metadata 4.12.0.
black 21.12b0 has requirement tomli<2.0.0,>=0.2.6, but you have tomli 2.0.1.

Vulnerabilities that will be fixed

By pinning:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	696/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-PYGMENTS-1086606	pygments: 2.5.2 -> 2.7.4	No	Proof of Concept
	589/1000 Why? Has a fix available, CVSS 7.5	Denial of Service (DoS) SNYK-PYTHON-PYGMENTS-1088505	pygments: 2.5.2 -> 2.7.4	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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🦉 Regular Expression Denial of Service (ReDoS)

[sourcery-ai]

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• All of the files are larger than we can process. We're working on it!