fix ci buildscripts for flake8 errors

[swap357]

cleaning PR - addresses flake8 errors as seen on failing pre-commit workflow last release.
https://github.com/numba/llvmlite/actions/runs/20037244990

[Copilot]

Pull request overview

This PR addresses flake8 linting errors in the buildscripts identified in a failing pre-commit workflow. The changes focus on formatting improvements to comply with line length limits and Python style guidelines.

• Reformatted long lines to comply with flake8 line length requirements
• Improved code readability through multi-line formatting of long strings, function calls, and data structures
• Removed trailing newlines from file endings

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
buildscripts/github/validate_win-64_wheel.py	Reformatted set comprehension to split across multiple lines for readability
buildscripts/github/llvmlite_evaluate.py	Reformatted dictionary entries in the default_include list to multi-line format for improved readability
buildscripts/github/find_workflow_runs.py	Fixed multiple line-length violations by splitting long strings and function calls; removed trailing newline
buildscripts/github/download_artifacts.py	Fixed multiple line-length violations by splitting long strings and function calls; removed trailing newline

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Looks good, thank you.