Update css-loader to ^3.0.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
css-loader	dependencies	major	^2.0.0 -> ^3.0.0

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Release Notes

webpack-contrib/css-loader

v3.1.0

Compare Source

Bug Fixes

• converting all (including reserved and control) filesystem characters to - (it was regression in 3.0.0 version) (#​972) (f51859b)
• default context should be undefined instead of null (#​965) (9c32885)

Features

• allow modules.getLocalIdent to return a falsy value (#​963) (9c3571c)
• improved validation error messages (65e4fc0)

v3.0.0

Compare Source

Bug Fixes

• converting all (including reserved and control) filesystem characters to - (it was regression in 3.0.0 version) (#​972) (f51859b)
• default context should be undefined instead of null (#​965) (9c32885)

Features

• allow modules.getLocalIdent to return a falsy value (#​963) (9c3571c)
• improved validation error messages (65e4fc0)

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