Bump twemoji and katex to latest version (#532)

* Bump twemoji from 13.0.1 to 13.0.2

* Bump katex from 0.12.0 to 0.13.0

layouts/_default/baseof.html

@@ -89,8 +89,8 @@
     {{ end -}}
 
     {{ if .Site.Params.enableTwemoji }}
-      <script defer src="https://twemoji.maxcdn.com/v/13.0.1/twemoji.min.js"
-        integrity="sha384-5f4X0lBluNY/Ib4VhGx0Pf6iDCF99VGXJIyYy7dDLY5QlEd7Ap0hICSSZA1XYbc4" crossorigin="anonymous"></script>
+      <script defer src="https://twemoji.maxcdn.com/v/13.0.2/twemoji.min.js"
+        integrity="sha384-wyB/MspSJ/r2bT2kCj44qtsYRYlpzO2oAPhRj5myrWD63dt6qWv4x8AZe7Fl3K3b" crossorigin="anonymous"></script>
     {{ end }}
 
     {{ hugo.Generator }}

layouts/partials/posts/math.html

@@ -18,13 +18,13 @@
   </script>
 {{- end -}}
 {{- if or (.Params.katex) (.Site.Params.katex) -}}
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.css"
-    integrity="sha384-AfEj0r4/OFrOo5t7NnNe46zW/tFgW6x/bCJG8FqQCEo3+Aro6EYUG4+cU+KJWu/X" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.13.0/dist/katex.min.css"
+    integrity="sha384-t5CR+zwDAROtph0PXGte6ia8heboACF9R5l/DiY+WZ3P2lxNgvJkQk5n7GPvLMYw" crossorigin="anonymous">
   {{/* The loading of KaTeX is deferred to speed up page rendering */}}
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.js"
-    integrity="sha384-g7c+Jr9ZivxKLnZTDUhnkOnsh30B4H0rpLUpJ4jAIKs4fnJI+sEnkvrMWph2EDg4" crossorigin="anonymous"></script>
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/contrib/auto-render.min.js"
-    integrity="sha384-mll67QQFJfxn0IYznZYonOWZ644AWYC+Pt2cHqMaRhXVrursRwvLnLaebdGIlYNa" crossorigin="anonymous"
+  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.0/dist/katex.min.js"
+    integrity="sha384-FaFLTlohFghEIZkw6VGwmf9ISTubWAVYW8tG8+w2LAIftJEULZABrF9PPFv+tVkH" crossorigin="anonymous"></script>
+  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.13.0/dist/contrib/auto-render.min.js"
+    integrity="sha384-bHBqxz8fokvgoJ/sc17HODNxa42TlaEhB+w8ZJXTc2nZf1VgEaFZeZvT4Mznfz0v" crossorigin="anonymous"
     onload="renderMathInElement(document.body,
       {
         delimiters: [