github-changelog-generator-action doing too many requests to git hub api

[jkremser]

even though we use the sinceTag param for this action,

It performs too many requests (1 per each PR so far -> 832). However, there is 1k requests per gh token limit so we will hit the limit with this action.

Workaround, use different gh token for this.

[jkremser]

This has been done when fixing the failed release - efbb9d2