chore(deps): update dependency autoprefixer to v9.8.7

[mend-for-github-com]

This PR contains the following updates:

Package	Type	Update	Change
autoprefixer	devDependencies	minor	9.6.1 -> 9.8.7

By merging this PR, the below vulnerabilities will be automatically resolved:

Severity	CVSS Score	CVE
High	7.5	CVE-2021-23382

---

Release Notes

postcss/autoprefixer (autoprefixer)

v9.8.7

Compare Source

• Replaced colorette with nanocolors.
• Reduced package size.

v9.8.6

Compare Source

• Fixed env option.

v9.8.5

Compare Source

• Improved Grid Layout warnings (by Daniel Tonon).
• Fixed align-self and justify-self with display: flex (by Daniel Tonon).

v9.8.4

Compare Source

• Replace color output library.

v9.8.3

Compare Source

• Return old non-LTS Node.js versions to avoid breaking changes.

v9.8.2

Compare Source

• Remove Node.js 13.0-13.7 from supported engines, because of buggy ESM support.

v9.8.1

Compare Source

• Replace chalk to kleur (by Luke Edwards).
• Update docs (by @​mbomb007).

v9.8.0: 9.8 “Vigilo Confido”

Compare Source

Autoprefixer 9.8 brings IE support for :placeholder-shown.

Placeholder Shown

@​tkrotoff found that input:placeholder-shown can be emulated with input:-ms-input-placeholder.

input:-ms-input-placeholder {
  box-shadow: 0 0 0 1px blue;
}

input:placeholder-shown {
  box-shadow: 0 0 0 1px blue;
}

Note, that we already had support for ::placeholder. Selector ::placeholder is for the text of the placeholder. :placeholder-shown is for the input, where placeholder text is shown. In ::placeholder you can’t change the border or size of the <input>.

v9.7.6

Compare Source

• Revert -webkit-stretch fix.

v9.7.5

Compare Source

• Fix -webkit-stretch support.

v9.7.4

Compare Source

• Fix warning text (by Dmitry Ishkov).

v9.7.3

Compare Source

• Fix compatibility with PostCSS Modules.

v9.7.2

Compare Source

• Add -ms-user-select: element support.
• Add funding link for npm fund.

v9.7.1

Compare Source

• Avoid unnecessary transitions in prefixed selectors (by Andrey Alexandrov).
• Fix fit-content for Firefox.

v9.7.0: 9.7 “Ad Victoriam”

Compare Source

Autoprefixer 9.7 brings AUTOPREFIXER_GRID environment variable and huge performance improvments.

Grid Environment Variable

Autoprefixer can add CSS Grid polyfills for IE. You need to manually enable it to prove that you understand the limits of polyfill.

In previous versions you can enable Grid polyfill by grid: 'autoplace' option or by /* autoprefixer grid: autoplace */ control comment. But in some cases, developers were not able to use both methods. For instance, during work with Material UI’ CSS-in-JS in Create React App.

Now Autoprefixer supports environment variable to enable CSS Grid polyfill:

AUTOPREFIXER_GRID=autoplace npm build

Performance Improvements

@​Knagis found that Browserslist takes 70% of the Autoprefixer time.

We did a lot of improvements in Browserslist and now Autoprefixer should work much faster.

Other

• Fix Cannot read property 'grid' of undefined error

v9.6.5

Compare Source

• Fix selector prefixing (by Andrey Alexandrov).

v9.6.4

Compare Source

• Now the real fix for 'startsWith' of undefined error.

v9.6.3

Compare Source

• Fix Cannot read property 'startsWith' of undefined error.

v9.6.2

Compare Source

• Fix false Replace fill to stretch warning.

---

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