update tss-lib dependency from v2.0.0 to a newer upstream version

[jairajdev]

Summary

bnb-chain/tss is currently pinned to an older tss-lib release:

github.com/bnb-chain/tss-lib/v2 v2.0.0

It looks like this is now behind the current upstream tss-lib state.

Current gap

From checking bnb-chain/tss-lib:

• tss currently pins: v2.0.0
• latest tagged release in tss-lib: v2.0.2
• tss-lib default branch: origin/master
• origin/master head observed locally: c84c096 (add checker in modproof (#323))

Distance from the version currently used by tss:

• v2.0.0 -> v2.0.2: 28 commits behind
• v2.0.0 -> origin/master: 32 commits behind

Why this matters

There are already multiple fixes and changes after v2.0.0, for example:

• add checker in modproof (#323)
• Update range proof (#289)
• check whether the threshold and size of vs is equal (#291)
• fix input parameters
• add NewLocalPartyWithLength for leading zero issue in ecdsa
• add NewLocalPartyWithLength for leading zero issue in eddsa
• Fix: update always round.ok (#282)
• fixed nil pointer on String() method (#276)

Request

Please update bnb-chain/tss from github.com/bnb-chain/tss-lib/v2 v2.0.0 to a newer upstream version from bnb-chain/tss-lib.

At minimum, updating to v2.0.2 would reduce the gap.
Preferably, update to the latest appropriate upstream revision after compatibility testing.

Notes

This request is based on the current dependency configuration in tss/go.mod and comparison against the current bnb-chain/tss-lib repo state.