Bump cssnano from 4.1.11 to 5.0.0

[dependabot[bot]]

Bumps cssnano from 4.1.11 to 5.0.0.

Release notes

Sourced from cssnano's releases.

v5.0.0

Major changes

• requires Node >= 10.13
• PostCSS 8 API, so cssnano 5 does not emit warnings when running under PostCSS 8
• updated to SVGO 2, fixing many SVG minification bugs
• updated css-value-parser and css-selector-parser, fixing many bugs

Upgrade notes

If you use the cssnano JavaScript API, you need to change your code:

• Replace cssnano.process() with cssnano().process() (notice the () after cssnano)

• pass cssnano options to cssnano() instead of process()

cssnano(cssnanoOptions).process(postcssOptions)

Bug fixes

• fix improperly discarding @font-face declarations #726
• partially fix some isues where cssnano did not combine rules when used together with postcss-nested #1004
• fix translate3d() minification #920
• fix minification of values starting with e #589, #984
• fix minification of percentage vaalues #962, #957
• fix minification of aspect-ratio #963
• fix merging of @supports rules #974
• fix sorting of longhand and shorthand properties #535
• remove vulnerable dependency and always warn with bad SVG input #1034

Commits

• ac2dbc7 Publish
• 53a5d66 Merge pull request #1034 from cssnano/silence-cve-alerts
• fc8a52a refactor(postcss-svgo): always warn on invalid SVG
• 22d2a18 refactor: remove is-svg dependency
• 60d107b Merge pull request #1017 from cssnano/5.0.0-rc2
• 5ba19ca Publish
• 4218332 Merge pull request #1016 from cssnano/update-svgo
• dbc08bf test: update SVG output in framework tests
• aa07cfd fix: update SVGO
• c4a4f69 Merge pull request #1014 from cssnano/fix-babel-deps
• Additional commits viewable in compare view

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