Update dependency autoprefixer to v10.4.19

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
autoprefixer	10.3.6 -> 10.4.19

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Release Notes

postcss/autoprefixer (autoprefixer)

v10.4.19

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• Removed end value has mixed support, consider using flex-end warning
  since end/start now have good support.

v10.4.18

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• Fixed removing -webkit-box-orient on -webkit-line-clamp (@​Goodwine).

v10.4.17

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• Fixed user-select: contain prefixes.

v10.4.16

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• Improved performance (by Romain Menke).
• Fixed docs (by Christian Oliff).

v10.4.15

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• Fixed ::backdrop prefixes (by 一丝).
• Fixed docs (by Christian Oliff).

v10.4.14

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• Improved startup time and reduced JS bundle size (by Kārlis Gaņģis).

v10.4.13

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• Fixed missed prefixes on vendor prefixes in name of CSS Custom Property.

v10.4.12

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• Fixed support of unit-less zero angle in backgrounds (by 一丝).

v10.4.11

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• Fixed text-decoration prefixes by moving to MDN data (by Romain Menke).

v10.4.10

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• Fixed unicode-bidi prefixes by moving to MDN data.

v10.4.9

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• Fixed css-unicode-bidi issue from latest Can I Use.

v10.4.8

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• Do not print color-adjust warning if print-color-adjust also is in rule.

v10.4.7

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• Fixed print-color-adjust support in Firefox.

v10.4.6

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• Fixed print-color-adjust support.

v10.4.5

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• Fixed NaN in grid (by @​SukkaW).

v10.4.4

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• Fixed package.funding to have same value between all PostCSS packages.

v10.4.3

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• Fixed package.funding (by Álvaro Mondéjar).

v10.4.2

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• Fixed missed -webkit- prefix for width: stretch.

v10.4.1

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• Fixed ::backdrop prefixes (by 一丝).
• Fixed docs (by Christian Oliff).

v10.4.0: 10.4 “ǃke e꞉ ǀxarra ǁke”

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In Autoprefixer 10.4 @​lukewarlow added :autofill support:

input:-webkit-autofill {
  background-color: red;
}

input:autofill {
  background-color: red;
}

v10.3.7

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• Replaced nanocolors to picocolors.

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This PR has been generated by Mend Renovate. View repository job log here.

[coveralls]

Coverage remained the same at 100.0% when pulling 6917845 on renovate/autoprefixer-10.x into a6551d7 on develop.