Add integrity attribute to icons link

layouts/partials/paige-link.html

@@ -6,7 +6,7 @@
 {{ if .Site.Params.paigebootstrapicons }}
 <link href="{{ relURL .Site.Params.paigebootstrapicons }}" rel="stylesheet">
 {{ else }}
-<link crossorigin="anonymous" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.2/font/bootstrap-icons.css" rel="stylesheet">
+<link crossorigin="anonymous" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.2/font/bootstrap-icons.css" integrity="sha384-b6lVK+yci+bfDmaY1u0zE8YYJt0TZxLEAFyYSLHId4xoVvsrQu3INevFKo+Xir8e" rel="stylesheet">
 {{ end }}
 {{ if or .Site.Params.math .Params.math }}
 <link crossorigin="anonymous" href="https://cdn.jsdelivr.net/npm/katex@0.16.3/dist/katex.min.css" integrity="sha384-Juol1FqnotbkyZUT5Z7gUPjQ9gzlwCENvUZTpQBAPxtusdwFLRy382PSDx5UUJ4/" rel="stylesheet">