SDK v50

[reecepbcups]

TODO:

• v20 upgrade handler
• {Move to SDK v0.50](https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/UPGRADING.md) (cosmossdk.io/core 0.11 is required, not v0.12)

resolves:

• chore: Remove x/params module #792

[dimiandre]

🤯