chore(deps): update dependency autoprefixer to ^10.3.1 for gatsby-plugin-sass

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
autoprefixer	^10.2.6 -> ^10.3.1

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Release Notes

postcss/autoprefixer

v10.3.1

Compare Source

• Fixed adding wrong prefixes to content (by Luke Warlow).

v10.3.0

Compare Source

In Autoprefixer 10.3 @​lukewarlow added ::file-selector-button support.

::-webkit-file-upload-button {
  border: 2px solid #​6c5ce7;
  padding: .2em .4em;
  border-radius: .2em;
  background-color: #a29bfe;
}

::file-selector-button {
  border: 2px solid #​6c5ce7;
  padding: .2em .4em;
  border-radius: .2em;
  background-color: #a29bfe;
}

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Configuration

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🚦 Automerge: Enabled.

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

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