Update dependency css-loader to v7

[valtionavustus-renovate]

This PR contains the following updates:

Package	Type	Update	Change
css-loader	devDependencies	major	^6.7.1 -> ^7.0.0

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Release Notes

webpack-contrib/css-loader (css-loader)

v7.1.2

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v7.1.1

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v7.1.0

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Features

• added the getJSON option to output CSS modules mapping (#​1577) (af834b4)

v7.0.0

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⚠ BREAKING CHANGES

• The modules.namedExport option is true by default if you enable the esModule option

Migration guide:

Before:

import style from "./style.css";

console.log(style.myClass);

After:

import * as style from "./style.css";

console.log(style.myClass);

To restore 6.x behavior, please use:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/i,
        loader: "css-loader",
        options: {
          modules: {
            namedExport: false,
            exportLocalsConvention: 'as-is',
            //
            // or, if you prefer camelcase style
            //
            // exportLocalsConvention: 'camel-case-only'
          },
        },
      },
    ],
  },
};

• The modules.exportLocalsConvention has the value as-is when the modules.namedExport option is true and you don't specify a value
• Minimum supported webpack version is 5.27.0
• Minimum supported Node.js version is 18.12.0

Features

• The modules.namedExports option works fine with any modules.exportLocalsConvention values (f96a110)
• Added dashed variants for the modules.exportLocalsConvention options (40e1668)

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Configuration

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This PR has been generated by Renovate Bot.