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

templates/repo/settings/collaboration.tmpl

@@ -114,7 +114,7 @@
 
 <div class="ui small basic delete modal">
 	<div class="ui icon header">
-		{{svg "octicon-trashcan"}}
+		{{svg "octicon-trash"}}
 		{{.i18n.Tr "repo.settings.collaborator_deletion"}}
 	</div>
 	<div class="content">

templates/repo/settings/deploy_keys.tmpl

@@ -82,7 +82,7 @@
 
 <div class="ui small basic delete modal">
 	<div class="ui icon header">
-		{{svg "octicon-trashcan"}}
+		{{svg "octicon-trash"}}
 		{{.i18n.Tr "repo.settings.deploy_key_deletion"}}
 	</div>
 	<div class="content">

templates/repo/settings/lfs.tmpl

@@ -27,7 +27,7 @@
 						<td class="right aligned">
 							<a class="ui primary show-panel button" href="{{$.Link}}/find?oid={{.Oid}}&size={{.Size}}">{{$.i18n.Tr "repo.settings.lfs_findcommits"}}</a>
 							<button class="ui basic show-modal icon button" data-modal="#delete-{{.Oid}}">
-								<span class="btn-octicon btn-octicon-danger poping up"  data-content="{{$.i18n.Tr "repo.editor.delete_this_file"}}" data-position="bottom center" data-variation="tiny inverted">{{svg "octicon-trashcan"}}</span>
+								<span class="btn-octicon btn-octicon-danger poping up"  data-content="{{$.i18n.Tr "repo.editor.delete_this_file"}}" data-position="bottom center" data-variation="tiny inverted">{{svg "octicon-trash"}}</span>
 							</button>
 						</td>
 					</tr>

templates/repo/settings/webhook/base_list.tmpl

@@ -52,7 +52,7 @@
 				<a class="dont-break-out" href="{{$.BaseLink}}/{{.ID}}">{{.URL}}</a>
 				<div class="ui right">
 					<span class="text blue px-2"><a href="{{$.BaseLink}}/{{.ID}}">{{svg "octicon-pencil"}}</a></span>
-					<span class="text red px-2"><a class="delete-button" data-url="{{$.Link}}/delete" data-id="{{.ID}}">{{svg "octicon-trashcan"}}</a></span>
+					<span class="text red px-2"><a class="delete-button" data-url="{{$.Link}}/delete" data-id="{{.ID}}">{{svg "octicon-trash"}}</a></span>
 				</div>
 			</div>
 		{{end}}

templates/repo/settings/webhook/delete_modal.tmpl

@@ -1,6 +1,6 @@
 <div class="ui small basic delete modal">
 	<div class="ui icon header">
-		{{svg "octicon-trashcan"}}
+		{{svg "octicon-trash"}}
 		{{.i18n.Tr "repo.settings.webhook_deletion"}}
 	</div>
 	<div class="content">