Bump punycode from 1.4.1 to 2.1.1

[dependabot-preview[bot]]

Bumps punycode from 1.4.1 to 2.1.1.

Release notes

Sourced from punycode's releases.

v2.0.0

This release drops support for old environments. Punycode.js v2.0.0 targets Node.js v6+ and nothing else. For the old version that offers the same functionality with broader support, including Rhino, Ringo, Narwhal, and web browsers, see v1.4.1.

Commits

• 68df855 Release v2.1.1
• 185e0d8 Add support for named exports
• cc9ecb5 package.json: Add module property
• 9aeca52 Release v2.1.0
• 4868009 Make punycode.toASCII not alter ASCII-safe input
• e29d10d Release v2.0.1
• e69fd3d Add ES6 module output
• a541fe6 .travis.yml: Cache ~/.npm
• a086555 README: Note that Punycode.js won’t ship with Node.js forever
• 681a9a4 Release v2.0.0
• Additional commits viewable in compare view

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