chore(deps-dev): Update sphinx requirement from <2.4.0,>=2.1.2 to >=2.1.2,<3.1.0#173

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dependabot/pip/sphinx-gte-2.1.2-and-lt-3.1.0malramsay64/statdyn-analysis:dependabot/pip/sphinx-gte-2.1.2-and-lt-3.1.0Copy head branch name to clipboard