Update dependency autoprefixer to v10.4.19

This MR contains the following updates:

Package	Type	Update	Change
autoprefixer	devDependencies	patch	10.4.16 -> 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.

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Configuration

Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

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• If you want to rebase/retry this MR, check this box

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This MR has been generated by Renovate Bot.

mentioned in issue #208

added 8 commits

• 669de618...fd7d8270 - 7 commits from branch develop
• df3ca49e - Update dependency autoprefixer to v10.4.20

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added 1 commit

• b6507ff2 - Update dependency autoprefixer to v10.4.21

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