Update virtualenv requirement from >=21.3.1 to >=21.3.3

[dependabot]

Updates the requirements on virtualenv to permit the latest version.

Release notes

Sourced from virtualenv's releases.

21.3.3

What's Changed

• Accept GraalPy implementation name. by @​timfel in pypa/virtualenv#3144

Full Changelog: pypa/virtualenv@21.3.2...21.3.3

Changelog

Sourced from virtualenv's changelog.

Bugfixes - 21.3.3

• recognize GraalPy interpreters using the normalized GraalPy name - by :user:timfel. (:issue:3144)

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v21.3.2 (2026-05-12)

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No significant changes.

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v21.3.1 (2026-05-05)

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Bugfixes - 21.3.1

• Upgrade embedded wheels:

  • pip to 26.1.1 from 26.1 (:issue:3138)

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v21.3.0 (2026-04-27)

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Features - 21.3.0

• Re-introduce xonsh shell activator (activate.xsh) previously removed in 20.7.0, and make the plugin loader prefer virtualenv's built-in entry points so a third-party package cannot override them by registering a duplicate name. (:issue:3003)

Bugfixes - 21.3.0

• Upgrade embedded wheels:

  • pip to 26.1 (:issue:3132)

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v21.2.4 (2026-04-14)

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Bugfixes - 21.2.4

• Security hardening: validate each entry of a seed wheel archive before extracting it so a tampered wheel cannot escape the app-data image directory via an absolute path or .. traversal. (:issue:3118)
• Security hardening: verify the SHA-256 of every bundled seed wheel when it is loaded so a corrupted or tampered file

... (truncated)

Commits

• e6dba2a release 21.3.3
• e7517c0 Accept GraalPy implementation name. (#3144)
• 8531d47 release 21.3.2
• afefada 🐛 fix(upgrade): regen embedded init with correct MAX and 3.16 (#3143)
• 7e27041 [pre-commit.ci] pre-commit autoupdate (#3141)
• 214934c add 3.16 to embedded wheel versions (#3140)
• See full diff in compare view

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[dependabot]

Superseded by #58.