⬆️ Bump graphviz from 0.16 to 0.17

[dependabot-preview[bot]]

Bumps graphviz from 0.16 to 0.17.

Changelog

Sourced from graphviz's changelog.

Version 0.17

Drop Python 2 support. Tag Python 3.10 support.

Migrate CI to GitHub actions. Add pypy3 to matrix.

Tests: implement --skip-exe via custom pytest marker.

Documentation: point Anaconda users to conda-forge/python-graphviz.

Move type hints from docstrings to type annotations. Improve doctests.

Examples: standardize import convention and modernize.

Re-render example notebooks with Graphviz 2.46.1.

Commits

• f5c2aaf release 0.17
• 6088b9a drop leading comment
• 1cf1a38 tag Python 3.10 support
• b35597d add Python 3.10-beta to test matrix
• 6c77f29 document latest changes
• 6e9774b document that clean=True only deletes intermediate files on successful rendering
• e4cca42 run build on pull requests and restrict build badge to main branch
• 78885a8 add pypy3 to new GitHub actions test matrix
• a0668ea migrate CI from Travis to GitHub actions
• bb1af2e reorder tests jobs new to old Python env
• Additional commits viewable in compare view

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