Sitecore Scheduled Publishing Module - Published 10.4 packages and Docker images

Sitecore Scheduled Publishing module has been updated to support Sitecore 10.4. Following changes were made as part of the release. 

1. Updated Source to Sitecore 10.4
   
   Module source has been updated to 10.4. 
   
   
2. Created Packages for Sitecore 10.4
   
   Two packages were created. One is with IAR files for content and another one is the regular Sitecore content package. 
   
   
3. Created and published Docker Images
   
   Created and published new Docker image with tag 10.4. This image is built with IAR files. Along with 10.4 tag, latest tag has been updated to 10.4. You can view it here in Docker Hub. 
   
   
4. Documentation updated for schedular configuration
   
   In order for the scheduled publishing to publish the content, Sitecore's scheduling frequency and interval needs to be adjusted. This has been clearly documented in Readme markdown.

A new release has been added in GitHub with all the relevant assets. https://github.com/nehemiahj/SCScheduledPublishing/releases/tag/Sitecore_10.4