bump Cosmos SDK and wasmd

[gitferry]

Now the CI has passed. Did some fixes:

• TestPrepareProposalAtVoteExtensionHeight fixed in 673110d
  • The header info needs chainID
  • We need to ensure that BLS signatures are all signed over the most weighted block hash (this is a bug)
• FuzzDeterminismBtcstakingBeginBlocker fixed in 812a57d
  • In the helper function, the block header is generated randomly. That's why the test won't pass.
  • In a fix of Cosmos v0.50.4, the headerInfo is set to the finalized state via block header, so we can remove .WithHeader()

[SebastianElvis]

Thanks @gitferry @KonradStaniec for the comments! You guys are right that the proposal could still contain invalid vote extensions and we have to be resilient against those. I have fixed the tests, and along the way we have found a bunch of new things:

• In ProcessProposal, we used to return err if ValidateVoteExtensions fails, and returning error will make the node panick. Given that now it validates a few more things that could be manipulated by the adversarial proposer, we should simply reject the proposal without panic.
• ProcessProposal now also validates the ProposedLastCommit given in the request due to ValidateVoteExtensions. This PR has added relevant mock code to construct ProposedLastCommit.
• FuzzAddBLSSigVoteExtension_SomeInvalidVoteExtensions has to be resilient against invalid vote extensions, but not invalid signatures over vote extensions (upon which the proposal will be rejected). This PR has fixed ApplyEmptyBlockWithSomeInvalidVoteExtensions to generate invalid vote extensions but with valid signatures.

Please take a look again.