Update Run3 reco ART tests to use latest BIS78 MDT calib DB

Nicolas Koehlerrequested to merge
nkoehler/athena:muArtBis78 into 21.3

Hi,

this MR updates the Run3 reco ART tests to use the latest BIS78 MDT calib DB. The same update to master happens in !41294 (merged).

Best, Nico

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