Bump katex to 0.15.1 (#611)

* Bump katex to 0.13.18

* Bump katex to 0.15.1

Co-authored-by: Luiz F. A. de Prá <luizdepra@users.noreply.github.com>

layouts/partials/posts/math.html

@@ -1,11 +1,11 @@
 {{- if or (.Params.math) (.Site.Params.math) (.Params.katex) (.Site.Params.katex) -}}
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.css"
-    integrity="sha384-Um5gpz1odJg5Z4HAmzPtgZKdTBHZdw8S29IecapCSB31ligYPhHQZMIlWLYQGVoc" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.15.1/dist/katex.min.css"
+    integrity="sha384-R4558gYOUz8mP9YWpZJjofhk+zx0AS11p36HnD2ZKj/6JR5z27gSSULCNHIRReVs" crossorigin="anonymous">
   {{/* The loading of KaTeX is deferred to speed up page rendering */}}
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/katex.min.js"
-    integrity="sha384-YNHdsYkH6gMx9y3mRkmcJ2mFUjTd0qNQQvY9VYZgQd7DcN7env35GzlmFaZ23JGp" crossorigin="anonymous"></script>
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.11/dist/contrib/auto-render.min.js"
-    integrity="sha384-vZTG03m+2yp6N6BNi5iM4rW4oIwk5DfcNdFfxkk9ZWpDriOkXX8voJBFrAO7MpVl" crossorigin="anonymous"
+  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.15.1/dist/katex.min.js"
+    integrity="sha384-z1fJDqw8ZApjGO3/unPWUPsIymfsJmyrDVWC8Tv/a1HeOtGmkwNd/7xUS0Xcnvsx" crossorigin="anonymous"></script>
+  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.15.1/dist/contrib/auto-render.min.js"
+    integrity="sha384-+XBljXPPiv+OzfbB3cVmLHf4hdUFHlWNZN5spNQ7rmHTXpd7WvJum6fIACpNNfIR" crossorigin="anonymous"
     onload="renderMathInElement(document.body,
       {
         delimiters: [