Update dependency sphinxcontrib-programoutput to v0.20 (dev)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
sphinxcontrib-programoutput (changelog)	==0.19 → ==0.20

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Release Notes

OpenNTI/sphinxcontrib-programoutput (sphinxcontrib-programoutput)

v0.20

Compare Source

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• Stop testing Python 3.8 and 3.9. Only 3.10 and above are supported.
• Add an ansi extra to install erbsland-sphinx-ansi. Version
  1.2.4 or later is required.
• Explicitly list docutils as a dependency.
• Add the ability to specify a :class: argument to set CSS classes
  on programoutput nodes.
• [Internal] Convert static project metadata to pyproject.toml.
• [Internal] Clarify conflicting licensing statements by setting them
  all to the original BSD 2 Clause license.

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