Update dependency postcss-custom-properties to v12.1.11

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-custom-properties (source)	12.1.7 -> 12.1.11

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Release Notes

csstools/postcss-plugins (postcss-custom-properties)

v12.1.11

Compare Source

December 1, 2022

• Improve plugin performance

v12.1.10

Compare Source

October 20, 2022

• Fix how preserve: false interacts with logic around duplicate code (see 12.1.9).

:root {
	--my-order: 1;
}

.foo {
	order: 1;
	order: var(--my-order);
}

/* With `preserve: false` : */

.foo {
	order: 1;
}

v12.1.9

Compare Source

September 14, 2022

• Prevent duplicate code generation.

.foo {
	order: 1;
	order: var(--my-order, 1);
}

/* becomes */

.foo {
	order: 1;
- 	order: 1;
	order: var(--my-order, 1);
}

v12.1.8

Compare Source

June 10, 2022

• Remove some unneeded regular expressions.

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