Social Auto Poster - WordPress Plugin 5.4.5

* [*] Fix: Fixed header response issue with no-cache.

* [+] New: Added option to posting on linkedin company pages.
* [*] Fix: Fixed an issue of duplicate posting with Facebook cookie method.

* [+] New: Added support for multiple accounts in Tumblr
* [*] Fix: Fixed thumbnail posting issue in Tumblr if image file name contains
special characters.
* [*] Fix: Fixed "The REST API operation timeout error" from WordPress site health check.