Add gas limit to osmoutils Sudo helper

[AlpinYukseloglu]

Background

Our Sudo helper in osmoutils currently allows for unbounded gas on contract calls. While this is handled properly for regular transactions, it is not properly handled for functions that are called in begin block. Adding a gas limit (even if high) to this helper would meaningfully reduce the attack surface for CW contract calls.

Suggested Design

Wrap the Sudo call below with a childCtx that has a 30M gas limit (similar to what exists for queries):

osmosis/osmoutils/cosmwasm/helpers.go

Line 121 in 7d734f6

responseBz, err := contractKeeper.Sudo(ctx, sdk.MustAccAddressFromBech32(contractAddress), bz)

Acceptance Criteria

• Gas limit is added