[Runtime 1.4.2] Whitelist Polkadot AH and Collectives upgrade

Whitelist for https://polkadot.subsquare.io/referenda/1486

opengov-cli build-upgrade --network polkadot --only --asset-hub "v1.4.2" --collectives "v1.4.2"
opengov-cli submit-referendum \
    --proposal "./upgrade-polkadot-1.4.2/polkadot-1.4.2.call" \
    --network "polkadot" --track "whitelistedcaller"

And then manually replace the lookup with an inline for the collectives ref.