chore(plugins) Add missing maintainer to css-minimizer-webpack-plugin

[montogeek]

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[alexander-akait]

I think better to use webpack-contrib here, because it supported by multiple developers

[montogeek]

Yeah, also this should support an array of contributors

[EugeneHlushko]

ok given its not supported lets merge, it was sufficient previously

[EugeneHlushko]

Thanks!