[deps] AC: Update mini-css-extract-plugin to v2.8.1 #20837

Job	Run time
Setup	5s
Build artifacts (selfhosted-open-source, dist:oss:selfhost)	2m 57s
Build artifacts (cloud-COMMERCIAL, dist:bit:cloud)	3m 1s
Build artifacts (selfhosted-COMMERCIAL, dist:bit:selfhost)	3m 2s
Build artifacts (cloud-QA, build:bit:qa, true)	3m 6s
Build artifacts (ee, build:bit:ee, true)	2m 57s
Build artifacts (cloud-euprd, build:bit:euprd)	2m 55s
Build artifacts (cloud-euqa, build:bit:euqa, true)	2m 56s
Build artifacts (cloud-usdev, build:bit:usdev, true)	2m 59s
Build Docker images (cloud-QA, web-qa-cloud)	1m 44s
Build Docker images (ee, web-ee)	53s
Build Docker images (selfhosted-COMMERCIAL, web)	36s
Crowdin Push	0s
Trigger web vault deploy	0s
Check for failures	14s
	27m 25s

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