Update dependency eslint-webpack-plugin to v5 (#109230)

* Update dependency eslint-webpack-plugin to v5

* set failOnError: false to match previous behaviour

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

scripts/webpack/webpack.dev.js

@@ -149,6 +149,7 @@ module.exports = (env = {}) => {
             lintDirtyModulesOnly: true, // don't lint on start, only lint changed files
             extensions: ['.ts', '.tsx'],
             configType: 'flat',
+            failOnError: false,
           }),
       new MiniCssExtractPlugin({
         filename: 'grafana.[name].[contenthash].css',