Throw error for untested Dragen versions

[mwalker174]

From the review of #722. GatherSampleEvidence by default checks if the input bam/cram was aligned with DRAGEN v3.7.8, which triggers soft-clip realignment. Only 3.7.8 and 4.3.12 (which does not exhibit the soft-clipping bug) have been tested, however.

The task that identifies the DRAGEN version should check the version explicitly and throw an error if it's not one of the two above. This would be default behavior and possible to override with another input flag.