Integrate 47

[faddat]

I think that it's now reasonable to make main the sdk 47 compatible branch and discontinue targeting any 46 support for the LSM becasue:

• this will reduce maintainership burden
• this will reduce the likelihood of bugs and errors affecting either version
• PR's can target a well understood branch

[faddat]

Do we care to do this, or is this:

• https://github.com/cosmos/gaia/pull/2852

a better approach, with the lsm bundled to the sdk?