chore(build): Remove version numbers from build artifact names

[Jyyjy]

Copied from https://github.com/apache/flagon-useralejs/issues/506

Problem

Build artifact names contain the version number. This creates a dependency between our test suite (see here, for example) and the version number. Not only is this a blocker for automation, it will create flaky tests on every release.

Solution

Remove version numbers from the build artifact name. The only place version numbers need be included is on the release channels (NPM, apache), not in built js files themselves.