Bump follow-redirects from 1.15.4 to 1.15.6 (#1964) #1378

Job	Run time
JS API \| Pure JS \| Browser	1m 22s
Language \| Dart Sass \| Dart stable	59s
JS API \| Embedded \| Node lts/* \| ubuntu-latest	4m 18s
Language \| Dart Sass \| Dart dev	1m 6s
JS API \| Pure JS \| Node lts/* \| ubuntu-latest	1m 19s
JS API \| Embedded \| Node lts/* \| windows-latest	6m 2s
Lint spec files	18s
JS API \| Pure JS \| Node lts/* \| windows-latest	2m 48s
JS API \| Embedded \| Node lts/* \| macos-latest	10m 18s
JS API \| Pure JS \| Node lts/* \| macos-latest	2m 49s
Static analysis	20s
JS API \| Embedded \| Node lts/-1 \| ubuntu-latest	4m 21s
JS API \| Pure JS \| Node lts/-1 \| ubuntu-latest	1m 17s
JS API \| Embedded \| Node lts/-2 \| ubuntu-latest	4m 41s
Unit tests	40s
JS API \| Pure JS \| Node lts/-2 \| ubuntu-latest	1m 24s
JS API \| Embedded \| Node lts/-3 \| ubuntu-latest	4m 46s
JS API \| Pure JS \| Node lts/-3 \| ubuntu-latest	1m 28s
	50m 16s

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