Bump imports-loader from 0.8.0 to 1.1.0 (#14323)

* Bump imports-loader from 0.8.0 to 1.1.0

Bumps [imports-loader](https://github.com/webpack-contrib/imports-loader) from 0.8.0 to 1.1.0.
- [Release notes](https://github.com/webpack-contrib/imports-loader/releases)
- [Changelog](https://github.com/webpack-contrib/imports-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/imports-loader/compare/v0.8.0...v1.1.0)

Signed-off-by: dependabot[bot] <support@github.com>

* Migrate new syntax

* Add semicolon

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

config/webpack/production.js

@@ -87,7 +87,7 @@ module.exports = merge(sharedConfig, {
         '**/*.woff',
       ],
       ServiceWorker: {
-        entry: `imports-loader?ATTACHMENT_HOST=>${encodeURIComponent(JSON.stringify(attachmentHost))}!${encodeURI(path.join(__dirname, '../../app/javascript/mastodon/service_worker/entry.js'))}`,
+        entry: `imports-loader?additionalCode=${encodeURIComponent(`var ATTACHMENT_HOST=${JSON.stringify(attachmentHost)};`)}!${encodeURI(path.join(__dirname, '../../app/javascript/mastodon/service_worker/entry.js'))}`,
         cacheName: 'mastodon',
         output: '../assets/sw.js',
         publicPath: '/sw.js',