Update hugo-bin to v0.43.1 (Hugo 0.55.1). (#28631)

site/layouts/_default/examples.html

@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="description" content="">
     <meta name="author" content="{{ .Site.Params.authors }}">
-    <meta name="generator" content="Hugo {{ .Hugo.Version }}">
+    <meta name="generator" content="Hugo {{ hugo.Version }}">
     <title>{{ .Page.Title | markdownify }} · {{ .Site.Title | markdownify }}</title>
 
     <link rel="canonical" href="{{ .Permalink }}">

site/layouts/partials/docs-sidebar.html

@@ -6,7 +6,7 @@
 </form>
 
 <nav class="collapse bd-links" id="bd-docs-nav" aria-label="Main navigation">
-  {{- $url := split .URL "/" -}}
+  {{- $url := split .Permalink "/" -}}
   {{- $page_slug := index $url (sub (len $url) 2) -}}
 
   {{- range $group := .Site.Data.nav -}}

site/layouts/partials/header.html

@@ -2,7 +2,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta name="description" content="{{ index .Page.Params "description" | default .Site.Params.description | markdownify }}">
 <meta name="author" content="{{ .Site.Params.authors }}">
-<meta name="generator" content="Hugo {{ .Hugo.Version }}">
+<meta name="generator" content="Hugo {{ hugo.Version }}">
 
 <meta name="docsearch:language" content="en">
 <meta name="docsearch:version" content="{{ .Site.Params.docs_version }}">

site/layouts/sitemap.xml

@@ -1,3 +1,4 @@
+{{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\" ?>" | safeHTML }}
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
   {{- range .Data.Pages -}}{{ if ne .Params.sitemap_exclude true }}
   <url>