Update q431/q221 references to match !38832

Merged Nicolas Koehler requested to merge nkoehler/athena:adaptRef into 21.3


as we agreed in !38832 (merged), we did not update the q431/q221 references there, since running this locally with the new version of MuonAuxContainer would have required compiling several packages locally. Instead, we update the references here in a dedicated MR.

Best, Nico

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