chore(deps): update dependency mini-css-extract-plugin to v2

This MR contains the following updates:

Package	Type	Update	Change
mini-css-extract-plugin	devDependencies	major	1.6.0 -> 2.1.0
@types/mini-css-extract-plugin	devDependencies	major	1.4.0 -> 2.0.1

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Release Notes

webpack-contrib/mini-css-extract-plugin

v2.1.0

Compare Source

v2.0.0

Compare Source

v1.6.2

Compare Source

v1.6.1

Compare Source

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