Update pydot requirement from ~=2.0 to >=2,<4

[dependabot[bot]]

Updates the requirements on pydot to permit the latest version.

Changelog

Sourced from pydot's changelog.

3.0.2 (2024-09-25)

Added:

• All to_string() methods now accept an indent keyword argument, which can be either a number or a string. indentation=4 will indent each level of the output with four spaces. indentation=" " will indent each level by that many spaces. Other whitespace is also valid, e.g. indent="\t" for tab indents. (#359)

Changed:

• Fixed quoting of identifiers with dots. (#419)
• Fixed quoting of leading-numeral strings (strings starting with a number). (#411)
• Fixed pickling/copying of Dot objects. (#403)
• Improved handling of temporary files. Temporary files will be cleaned up in all cases, even when exceptions are raised or things exit unexpectedly. (#394)
• From now on, the license files will be included in the distributed release as expected. (#392)

3.0.1 (2024-07-16)

This is a bugfix release to correct a critical error introduced in 3.0.0.

Changed:

• Fix quoting in Edge.to_string(). (#384)

3.0.0 (2024-07-15)

Removed:

• Breaking change: support for Python 3.7 dropped totally (#371). It was already dropped, but now it's official.
• Breaking change (but for nobody): Invalid syntax removed (#377). Removed syntax rules that were never implemented in graphviz's own parser.
• Attribute sorting removed (#361). Pydot will preserve the original order of attributes as defined.
• Breaking change: Remove .create_attribute_methods() from classes (#318). Setters and getters for attributes are now added to class definitions by calls to pydot.core.__generate_attribute_methods() immediately after the class is defined, for better compatibility with type-checking and introspection.

Changed:

• Internal storage and lookup of identifiers (names) improved (#363). Pydot now always stores values as they were originally input, and only performs quoting on output. Previously, when a graph element was created with a name that contained a space or otherwise required quoting, the quotes would be added immediately, making it

... (truncated)

Commits

• 754f3e8 Preparing release 3.0.2
• 1bbe42f Prepare changelog for 3.0.2 (#421)
• b358a83 Remove periods from unquoted alphanumeric IDs (#419)
• 97b65a2 Bump actions/setup-python from 5.1.1 to 5.2.0 (#416)
• 9f51542 Bump github/codeql-action from 3.25.15 to 3.26.6 (#417)
• 6bd0237 Implement indentation for all to_string() methods (#359)
• e784e48 Remove deprecated parts of test_pydot.py (#415)
• 39bd465 Exclude _vendor from coverage and display badge in README (#414)
• f3a2b83 Tests: Add coverage, use pytest as test runner (#395)
• 9fee4a3 Experimentally create separate ruff-check/fix envs (#412)
• Additional commits viewable in compare view

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