When a new version is beeing released it should auto update the version number which is shown on the GitHub page. Currently it has to be updated manually. I would also suggest to update the CDN links for pointing to a specific version instead of the master branch. This is recommended as best practices because when someone uses the CDN it should not be "auto updated" in the background which could cause Incompatibility (see discussion #391).

I think it should be possible to use the GitHub REST API for that: https://docs.github.com/en/free-pro-team@latest/rest/reference/repos#list-repository-tags