owncloud/core

Change: Update Symfony polyfill components to 1.13.0

The following Symfony polyfill components have been updated to version 1.13.0:
- polyfill-iconv
- polyfill-php72
- polyfill-mbstring
- polyfill-intl-idn
- polyfill-util
- polyfill-php56
- polyfill-ctype

https://github.com/symfony/polyfill/releases/tag/v1.13.0
https://github.com/owncloud/core/pull/36485