build(deps-dev): bump virtualenv from 21.7.8 to 21.7.9

[dependabot]

Bumps virtualenv from 21.7.8 to 21.7.9.

Release notes

Sourced from virtualenv's releases.

21.7.9

What's Changed

• fix(test): EncodingWarning: 'encoding' argument not specified by @​even-even in pypa/virtualenv#3228
• 🐛 fix(config): ignore a config file that fails to parse instead of crashing by @​darrenhuai in pypa/virtualenv#3230
• 🐛 fix(util): replace a stale symlink instead of writing through it by @​darrenhuai in pypa/virtualenv#3229

Full Changelog: pypa/virtualenv@21.7.8...21.7.9

Changelog

Sourced from virtualenv's changelog.

Bugfixes - 21.7.9

• Replace dangling symlinks, including interpreter aliases, when recreating an environment. This prevents FileExistsError with --symlinks and writes outside the environment with --copies - by :user:darrenhuai. (:issue:3229)
• Ignore malformed or unreadable virtualenv.ini files and report the error in the log and --help. Accept a UTF-8 byte order mark, as written by PowerShell 5 and older Notepad versions - by :user:darrenhuai. (:issue:3230)

---

v21.7.8 (2026-09-01)

---

Commits

• abd3829 release 21.7.9
• 66fadcb 🐛 fix(util): replace a stale symlink instead of writing through it (#3229)
• 4b31a63 🐛 fix(config): ignore a config file that fails to parse instead of crashing (...
• f9010b3 [pre-commit.ci] pre-commit autoupdate (#3231)
• 2ef85af fix(test): EncodingWarning: 'encoding' argument not specified (#3228)
• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[senzingdevops]

Automated: approving this pull request because it includes a patch update

[github-actions]

🤖 Claude Code Review

Code Review: bump virtualenv 21.7.8 → 21.7.9

The diff is a single-line patch-version bump of a dev dependency in pyproject.toml:45.

Code Quality

• ✅ Style conventions: The line matches the surrounding pinned-version format.
• ✅ No commented-out code: None added.
• ✅ Meaningful variable names: Not applicable.
• ✅ DRY: Not applicable.
• ✅ Defects: None found. This is a patch bump in the development extras only, so it doesn't affect runtime code or the snippets. I couldn't check the upstream changelog (no network access), but patch releases are normally low risk.
• ✅ CLAUDE.md: It isn't modified in this diff. It contains no local-environment-specific content, apart from placeholder paths and credentials that are clearly examples.

Testing

• ✅ Unit and integration tests, edge cases, coverage: Not applicable. This is a tooling dependency bump with no new functions or endpoints.

Documentation

• ✅ README and API docs: No update needed.
• ⚠️ CHANGELOG.md: Not updated. This is an automated dependency bump of a dev-only tool, so that's usually acceptable. Check whether the project's convention requires changelog entries for dependency updates.
• ✅ Markdown: No Markdown files changed.

Security

• ✅ No hardcoded credentials: None.
• ✅ Input validation, error handling, logging: Not applicable.
• ✅ License files: No .lic files or AQAAAD strings in the diff.

Notes

• The untracked files in the working tree (build-resources/, pr_diff.txt, prompt-header.md, prompt-temp.md, review.txt) aren't part of the diff. Make sure they aren't accidentally committed.

Verdict

✅ Approve. This is a low-risk, dev-only patch bump. CI passing is the only remaining gate.

Automated code review analyzing defects and coding standards

[dependabot]

Superseded by #246.