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/projects/list.tmpl

@@ -59,7 +59,7 @@
 						{{else}}
 							<a class="link-action" href data-url="{{$.Link}}/{{.ID}}/close">{{svg "octicon-skip"}} {{$.i18n.Tr "repo.projects.close"}}</a>
 						{{end}}
-						<a class="delete-button" href="#" data-url="{{$.RepoLink}}/projects/{{.ID}}/delete" data-id="{{.ID}}">{{svg "octicon-trashcan"}} {{$.i18n.Tr "repo.issues.label_delete"}}</a>
+						<a class="delete-button" href="#" data-url="{{$.RepoLink}}/projects/{{.ID}}/delete" data-id="{{.ID}}">{{svg "octicon-trash"}} {{$.i18n.Tr "repo.issues.label_delete"}}</a>
 					</div>
 					{{end}}
 					{{if .Description}}
@@ -78,7 +78,7 @@
 {{if or .CanWriteIssues .CanWritePulls}}
 <div class="ui small basic delete modal">
 	<div class="ui icon header">
-		{{svg "octicon-trashcan"}}
+		{{svg "octicon-trash"}}
 		{{.i18n.Tr "repo.projects.deletion"}}
 	</div>
 	<div class="content">

templates/repo/projects/view.tmpl

@@ -58,7 +58,7 @@
 							</a>
 						{{end}}
 						<a class="item delete-button" href="#" data-url="{{$.RepoLink}}/projects/{{.Project.ID}}/delete" data-id="{{.Project.ID}}">
-							{{svg "octicon-trashcan"}}
+							{{svg "octicon-trash"}}
 							<span class="mx-3">{{$.i18n.Tr "repo.issues.label_delete"}}</span>
 						</a>
 					</div>
@@ -92,7 +92,7 @@
 									</a>
 								{{end}}
 								<a class="item show-modal button" data-modal="#delete-board-modal-{{.ID}}">
-									{{svg "octicon-trashcan"}}
+									{{svg "octicon-trash"}}
 									{{$.i18n.Tr "repo.projects.board.delete"}}
 								</a>
 
@@ -203,7 +203,7 @@
 {{if or .CanWriteIssues .CanWritePulls}}
 	<div class="ui small basic delete modal">
 		<div class="ui icon header">
-			{{svg "octicon-trashcan"}}
+			{{svg "octicon-trash"}}
 			{{.i18n.Tr "repo.projects.deletion"}}
 		</div>
 		<div class="content">