Use Github actions only

[lukastaegert]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

Description

Try to solve the issue with creating the REPL artefact via a custom S3 bucket

[github-actions]

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rollup/rollup#github-actions

or load it into the REPL:
https://rollupjs.org/repl/?circleci=15029

[codecov]

Codecov Report

Merging #4042 (62c4e14) into master (e9bedf2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4042   +/-   ##
=======================================
  Coverage   97.48%   97.48%           
=======================================
  Files         192      192           
  Lines        6788     6788           
  Branches     1996     1996           
=======================================
  Hits         6617     6617           
  Misses         84       84           
  Partials       87       87           

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