Use IAVL v0.20.1 (#826)

go.mod

@@ -182,6 +182,9 @@ replace (
 	// cosmos keyring
 	github.com/99designs/keyring => github.com/cosmos/keyring v1.2.0
 
+	// support concurrency for iavl
+	github.com/cosmos/iavl => github.com/cosmos/iavl v0.20.1
+
 	// dgrijalva/jwt-go is deprecated and doesn't receive security updates.
 	// TODO: remove it: https://github.com/cosmos/cosmos-sdk/issues/13134
 	github.com/dgrijalva/jwt-go => github.com/golang-jwt/jwt/v4 v4.4.2

go.sum

@@ -398,8 +398,8 @@ github.com/cosmos/gogogateway v1.2.0/go.mod h1:iQpLkGWxYcnCdz5iAdLcRBSw3h7NXeOkZ
 github.com/cosmos/gogoproto v1.4.2/go.mod h1:cLxOsn1ljAHSV527CHOtaIP91kK6cCrZETRBrkzItWU=
 github.com/cosmos/gogoproto v1.4.10 h1:QH/yT8X+c0F4ZDacDv3z+xE3WU1P1Z3wQoLMBRJoKuI=
 github.com/cosmos/gogoproto v1.4.10/go.mod h1:3aAZzeRWpAwr+SS/LLkICX2/kDFyaYVzckBDzygIxek=
-github.com/cosmos/iavl v0.20.0 h1:fTVznVlepH0KK8NyKq8w+U7c2L6jofa27aFX6YGlm38=
-github.com/cosmos/iavl v0.20.0/go.mod h1:WO7FyvaZJoH65+HFOsDir7xU9FWk2w9cHXNW1XHcl7A=
+github.com/cosmos/iavl v0.20.1 h1:rM1kqeG3/HBT85vsZdoSNsehciqUQPWrR4BYmqE2+zg=
+github.com/cosmos/iavl v0.20.1/go.mod h1:WO7FyvaZJoH65+HFOsDir7xU9FWk2w9cHXNW1XHcl7A=
 github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 v7.0.0 h1:i9esYyZ5ExpZOgxrLMQhY2jDTVYiaD8yUeqXN9QBgbk=
 github.com/cosmos/ibc-apps/middleware/packet-forward-middleware/v7 v7.0.0/go.mod h1:fctjEnz9xaBFOlmYYPdKL8Hs1Y3GUKilSwsJdqBb5QU=
 github.com/cosmos/ibc-apps/modules/async-icq/v7 v7.0.0 h1:mMHedP3Q+mz5gpOWNz0P+X8hxPdamylrBKc/P2cFakA=