[Runtime 1.4.2] Upgrade Asset Hub

Whitelist for Kusama Asset Hub runtime upgrade 1.4.2: https://kusama.subsquare.io/referenda/505

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

And then manually replace the lookup with an inline.