Merge #2973

2973: Update protocolVersion to 6.0 in local cluster r=Anviking a=piotr-iohk



- [ ] I have updated protocolVersion to 6.0 in local cluster

### Comments

<!-- Additional comments, links, or screenshots to attach, if any. -->

### Issue Number

ADP-1204


Co-authored-by: Piotr Stachyra <piotr.stachyra@iohk.io>

lib/shelley/test/data/cardano-node-shelley/shelley-genesis.yaml

@@ -13,7 +13,7 @@ protocolParams:
   poolDeposit: 0
   protocolVersion:
     minor: 0
-    major: 0
+    major: 6
   minUTxOValue: 1000000
   decentralisationParam: 0.25 # means 75% decentralised
   maxTxSize: 16384