Bumping Velero chart version to resolve changelog issues affecting R2D2

R2D2 generates the entire changelog of release notes when there is a change with the version of Velero.

The problem is that the changelog for velero isn't consistent, as there is a gap between versions 5.0.2-bb.2 and 5.0.2-bb.0

Version 5.0.2-bb.1 had its changelog entries accidentally deleted when 5.0.2-bb.2 was created. This MR will resolve that and the issues with R2D2.