Remove global-builtin deprecation for plain-CSS `invert()` #1633

Job	Run time
JS API \| Pure JS \| Node ${{ matrix.node_version }} \| ${{ matrix.os }}	0s
JS API \| Pure JS \| Browser	0s
Language \| Dart Sass \| Dart ${{ matrix.dart_channel }}	0s
JS API \| Embedded \| Node lts/* \| ubuntu-latest	5m 40s
JS API \| Embedded \| Node lts/* \| windows-latest	7m 0s
Lint spec files	14s
Static analysis	20s
JS API \| Embedded \| Node lts/* \| macos-latest	4m 59s
Unit tests	38s
JS API \| Embedded \| Node lts/-1 \| ubuntu-latest	4m 59s
JS API \| Embedded \| Node lts/-2 \| ubuntu-latest	5m 27s
JS API \| Embedded \| Node lts/-3 \| ubuntu-latest	1m 38s
	30m 55s

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