Bump Yarn to v1 latest and ensure consistent PatternFly package version resolutions

Console frontend uses Yarn 1.22.15 from Sep 2021. We should update the version to v1 latest.

There is currently no automated way to check for consistency of PatternFly package version resolutions. We should add a script (executed as part of the build) to ensure that each PatternFly package has exactly one version resolution.