Bump pygraphviz from 1.7 to 1.9

[dependabot]

Bumps pygraphviz from 1.7 to 1.9.

Release notes

Sourced from pygraphviz's releases.

PyGraphviz 1.9

• Drop Python 3.7 support
• Add Python 3.10 support
• Add osage and patchwork to progs list
• Add IPython rich display hook to AGraph class
• Add contributor guide
• Fixed directed nature of AGraph.copy()
• Minor documentation and code fixes

Changelog

Sourced from pygraphviz's changelog.

Release process for pygraphviz

Introduction

Example version number

• 1.8.dev0 # development version of 1.8 (release candidate 1)
• 1.8rc1 # 1.8 release candidate 1
• 1.8rc2.dev0 # development version of 1.8 release candidate 2
• 1.8 # 1.8 release
• 1.9.dev0 # development version of 1.9 (release candidate 1)

Process

• Set release variables::

  export VERSION=<version number>
  export PREVIOUS=<previous version number>
  export ORG="pygraphviz"
  export REPO="pygraphviz"
  

  If this is a prerelease:

  export NOTES="doc/source/release/release_dev.rst"
  

  If this is release:

  export NOTES="doc/source/release/release_${VERSION}.rst"
  git rm doc/source/release/release_dev.rst
  

• Autogenerate release notes::

  changelist ${ORG}/${REPO}  pygraphviz-${PREVIOUS} main --version ${VERSION}  --out ${NOTES} --format rst
  changelist ${ORG}/${REPO}  pygraphviz-${PREVIOUS} main --version ${VERSION} --out ${VERSION}.md
  

• Update doc/source/release/index.rst

• Edit doc/source/_static/version_switcher.json in order to add the release, move the key value pair "preferred": true to the most recent stable version, and commit.

• Update version in pygraphviz/__init__.py.

• Commit changes::

  git add doc/source/release/index.rst ${NOTES} git add pygraphviz/init.py doc/source/_static/version_switcher.json pre-commit run -a

... (truncated)

Commits

• 536ee29 Designate 1.9 release
• e545de8 Update year (#396)
• 9ec45f3 Pass proper python version dependency in setup.py (#394)
• 64850e7 Add osage and patchwork to progs list (#393)
• c48161c fix: small error (#392)
• 8e25515 Bump version
• e56de66 Fix docs
• 9f871cd Designate 1.8 release
• 8502af9 Try mambaforge (#391)
• abfb0df Bump version
• Additional commits viewable in compare view

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