Update module mod_headers

[frontendschlampe]

We have to update the part of mod_headers module

current:

<IfModule mod_headers.c>
  <FilesMatch "\.(ttf|ttc|otf|eot|woff|font\.css)$">
    Header set Access-Control-Allow-Origin "*"
  </FilesMatch>
</IfModule>

new:

<IfModule mod_headers.c>
    # Allow access from all domains for webfonts (see contao/core-bundle#528)
    <FilesMatch "\.(ttf|ttc|otf|eot|woff2?|font\.css)$">
        Header set Access-Control-Allow-Origin "*"
    </FilesMatch>
</IfModule>

woff2will be added.

Should be done for Contao 3 and 4