chore(deps): Bump github.com/decred/dcrd/dcrec/secp256k1/v4

Bumps [github.com/decred/dcrd/dcrec/secp256k1/v4](https://github.com/decred/dcrd) from 4.2.0 to 4.3.0.
- [Release notes](https://github.com/decred/dcrd/releases)
- [Changelog](https://github.com/decred/dcrd/blob/master/CHANGES)
- [Commits](decred/dcrd@dcrec/secp256k1/v4.2.0...dcrec/secp256k1/v4.3.0)

---
updated-dependencies:
- dependency-name: github.com/decred/dcrd/dcrec/secp256k1/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/iavl v0.19.4
 	github.com/cosmos/ledger-cosmos-go v0.13.3
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0
 	github.com/go-kit/kit v0.13.0
 	github.com/gogo/gateway v1.1.0
 	github.com/gogo/protobuf v1.3.3

go.sum

@@ -162,8 +162,8 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/decred/dcrd/crypto/blake256 v1.0.1 h1:7PltbUIQB7u/FfZ39+DGa/ShuMyJ5ilcvdfma9wOH6Y=
 github.com/decred/dcrd/crypto/blake256 v1.0.1/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
 github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f h1:U5y3Y5UE0w7amNe7Z5G/twsBW0KEalRQXZzf8ufSh9I=
 github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f/go.mod h1:xH/i4TFMt8koVQZ6WFms69WAsDWr2XsYL3Hkl7jkoLE=
 github.com/dgraph-io/badger/v2 v2.2007.4 h1:TRWBQg8UrlUhaFdco01nO2uXwzKS7zd+HVdwV/GHc4o=