Merge #4485

4485: Switch default era to Babbage r=Jimbo4350 a=newhoggy

Code changes required for #4151

Co-authored-by: John Ky <john.ky@iohk.io>

cardano-cli/src/Cardano/CLI/Shelley/Parsers.hs

@@ -2062,7 +2062,7 @@ pCardanoEra = asum
       <> Opt.help "Specify the Babbage era"
       )
     -- Default for now:
-  , pure (AnyCardanoEra AlonzoEra)
+  , pure (AnyCardanoEra BabbageEra)
   ]
 
 pTxIn :: BalanceTxExecUnits