build(deps): Bump cosmossdk.io/math from 1.0.1 to 1.2.0 in /tx

Bumps [cosmossdk.io/math](https://github.com/cosmos/cosmos-sdk) from 1.0.1 to 1.2.0.
- [Release notes](https://github.com/cosmos/cosmos-sdk/releases)
- [Changelog](https://github.com/cosmos/cosmos-sdk/blob/main/CHANGELOG.md)
- [Commits](cosmos/cosmos-sdk@math/v1.0.1...log/v1.2.0)

---
updated-dependencies:
- dependency-name: cosmossdk.io/math
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

tx/go.mod

@@ -5,7 +5,7 @@ go 1.19
 require (
 	cosmossdk.io/api v0.3.1
 	cosmossdk.io/core v0.3.2
-	cosmossdk.io/math v1.1.2
+	cosmossdk.io/math v1.2.0
 	github.com/cosmos/cosmos-proto v1.0.0-beta.2
 	github.com/stretchr/testify v1.8.4
 	google.golang.org/protobuf v1.30.0

tx/go.sum

@@ -1,7 +1,7 @@
 cosmossdk.io/api v0.3.1 h1:NNiOclKRR0AOlO4KIqeaG6PS6kswOMhHD0ir0SscNXE=
 cosmossdk.io/api v0.3.1/go.mod h1:DfHfMkiNA2Uhy8fj0JJlOCYOBp4eWUUJ1te5zBGNyIw=
-cosmossdk.io/math v1.1.2 h1:ORZetZCTyWkI5GlZ6CZS28fMHi83ZYf+A2vVnHNzZBM=
-cosmossdk.io/math v1.1.2/go.mod h1:l2Gnda87F0su8a/7FEKJfFdJrM0JZRXQaohlgJeyQh0=
+cosmossdk.io/math v1.2.0 h1:8gudhTkkD3NxOP2YyyJIYYmt6dQ55ZfJkDOaxXpy7Ig=
+cosmossdk.io/math v1.2.0/go.mod h1:l2Gnda87F0su8a/7FEKJfFdJrM0JZRXQaohlgJeyQh0=
 github.com/cosmos/cosmos-proto v1.0.0-beta.2 h1:X3OKvWgK9Gsejo0F1qs5l8Qn6xJV/AzgIWR2wZ8Nua8=
 github.com/cosmos/cosmos-proto v1.0.0-beta.2/go.mod h1:+XRCLJ14pr5HFEHIUcn51IKXD1Fy3rkEQqt4WqmN4V0=
 github.com/cosmos/gogoproto v1.4.10 h1:QH/yT8X+c0F4ZDacDv3z+xE3WU1P1Z3wQoLMBRJoKuI=