chore: use semantic-release, update testing

[rvagg]

• update polendina w/ webpack 5 and better esm support
• make package.json more consistent with js-multiformats
• replace test & release workflow for semantic-release & consistency

[github-actions[bot]]

:tada: This PR is included in version 6.0.15 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: