MFH: r554013
wordpress: Update to 5.5.3
Changlogs:
- https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/
- https://wordpress.org/news/2020/10/wordpress-5-5-3-maintenance-release/
Security: 11325357-1d3c-11eb-ab74-4c72b94353b5
Sponsored by: Netzkommune GmbH
Approved by: ports-secteam (with hat)