Update JS dependencies (#15033)

* Update JS dependencies

- Update all JS dependencies
- For octicons, rename trashcan to trash
- For svgo, migrate to v2 api, output seems to have slightly changed but icons look the same
- For stylelint, update config, fix custom property duplicates
- For monaco, drop legacy Edge support
- For eslint, enable new rules, fix new issues
- For less-loader, remove deprecated import syntax

* update svgo usage in generate-images and rebuild logo.svg with it

docs/content/page/index.de-de.md

@@ -32,5 +32,5 @@ Gitea ist ein [Gogs](http://gogs.io)-Fork.
 
 ## Browser Unterstützung
 
-- Letzten 2 Versions von Chrome, Firefox, Safari, Edge (EdgeHTML) and Edge (Chromium)
+- Letzten 2 Versions von Chrome, Firefox, Safari und Edge
 - Firefox ESR

docs/content/page/index.en-us.md

@@ -262,7 +262,7 @@ Windows, on architectures like amd64, i386, ARM, PowerPC, and others.
 
 ## Browser Support
 
-- Last 2 versions of Chrome, Firefox, Safari, Edge (EdgeHTML) and Edge (Chromium)
+- Last 2 versions of Chrome, Firefox, Safari and Edge
 - Firefox ESR
 
 ## Components

docs/content/page/index.zh-tw.md

@@ -261,7 +261,7 @@ Gitea 是從 [Gogs](http://gogs.io) Fork 出來的，請閱讀部落格文章 [G
 
 ## 瀏覽器支援
 
-- 最近 2 個版本的 Chrome, Firefox, Safari, Edge (EdgeHTML), Edge (Chromium)
+- 最近 2 個版本的 Chrome, Firefox, Safari, Edge
 - Firefox ESR
 
 ## 元件