fix: remove pygraphviz from requirements.txt

[leonvanbokhorst]

This change simplifies the project's dependencies by removing the unnecessary pygraphviz package from requirements.txt, enhancing clarity and ensuring that only essential libraries are listed.

Summary by Sourcery

Bug Fixes:

• Remove the unnecessary pygraphviz package from requirements.txt to simplify dependencies.

[sourcery-ai]

Reviewer's Guide by Sourcery

The pull request removes the unused pygraphviz package from the project's dependencies, simplifying the dependency management without affecting functionality since pydot is already available for graph visualization needs.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Remove unnecessary graph visualization dependency	Remove pygraphviz package from requirements.txt Maintain pydot as the primary graph visualization library	requirements.txt

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[sourcery-ai]

We have skipped reviewing this pull request. We don't review packaging changes - Let us know if you'd like us to change this.