Add woff2 to cache

Signed-off-by: René Jochum <rene@jochum.dev>

docker/caddy/Caddyfile

@@ -8,7 +8,7 @@
     # Client side caching
     @static {
         file
-        path *.ico *.css *.js *.gif *.jpg *.jpeg *.png *.svg *.woff
+        path *.ico *.css *.js *.gif *.jpg *.jpeg *.png *.svg *.woff *.woff2
     }
     header @static Cache-Control max-age=31536000