Update packages

[eebbi]

Project: Tampereen kaupunki, konsernihallinto / Tietohallintoyksikkö:
Project task: Tampere multisite support

Task: https://hiondigital.atlassian.net/browse/TMS-1025
Task title: Projektin ylläpito

[Copilot]

Pull request overview

Updates the project’s Node/tooling baseline and front-end build dependencies/configuration as part of ongoing maintenance for the Tredu theme.

Changes:

• Bumped Node version (.nvmrc) and updated numerous npm dependencies (incl. webpack 5, ESLint tooling, SVGO).
• Modernized webpack.config.js by migrating from eslint-loader/file-loader to eslint-webpack-plugin and webpack 5 asset modules.
• Minor JS bug fix in Toggle duration handling and small CI cache action update.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
webpack.mix.js	Removes laravel-mix-eslint-config require (but Mix linting config remains).
webpack.config.js	Replaces deprecated loaders with webpack 5 equivalents; adds ESLint plugin; updates SVGO plugin config; adds resolve.fallback.
package.json	Updates/bump dependencies (Node/webpack/ESLint/SVGO/etc.) and adds missing runtime dep (hyphenopoly).
CHANGELOG.MD	Notes dependency/tooling updates in Unreleased.
assets/scripts/toggle.js	Fixes incorrect typeof comparison for duration data attribute.
.nvmrc	Updates Node version from v14 to v18.20.4.
.github/workflows/phpcs-check.yml	Updates GitHub Actions cache action to v4.

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[eebbi]

@copilot Is there a problem with this if the mix builds are not used?

[Copilot]

If Mix builds are truly never used (not in CI, releases, or local workflow), then this is not a runtime blocker for the current webpack build path. But it is still a maintenance risk: those npm scripts are currently broken (npm run dev-mix fails in this branch), so anyone invoking them later will hit errors. We can either remove the unused Mix path cleanly or keep it updated so it stays runnable.