build(deps): Bump cosmossdk.io/math from 1.3.0 to 1.4.0 in /x/tx

Bumps [cosmossdk.io/math](https://github.com/cosmos/cosmos-sdk) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/cosmos/cosmos-sdk/releases)
- [Changelog](https://github.com/cosmos/cosmos-sdk/blob/main/CHANGELOG.md)
- [Commits](cosmos/cosmos-sdk@log/v1.3.0...log/v1.4.0)

---
updated-dependencies:
- dependency-name: cosmossdk.io/math
  dependency-type: direct:production
...

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

x/tx/go.mod

@@ -6,7 +6,7 @@ require (
 	cosmossdk.io/api v0.7.3
 	cosmossdk.io/core v0.11.0
 	cosmossdk.io/errors v1.0.1
-	cosmossdk.io/math v1.3.0
+	cosmossdk.io/math v1.4.0
 	github.com/cosmos/cosmos-proto v1.0.0-beta.4
 	github.com/cosmos/gogoproto v1.4.12
 	github.com/google/go-cmp v0.6.0

x/tx/go.sum

@@ -4,8 +4,8 @@ cosmossdk.io/core v0.11.0 h1:vtIafqUi+1ZNAE/oxLOQQ7Oek2n4S48SWLG8h/+wdbo=
 cosmossdk.io/core v0.11.0/go.mod h1:LaTtayWBSoacF5xNzoF8tmLhehqlA9z1SWiPuNC6X1w=
 cosmossdk.io/errors v1.0.1 h1:bzu+Kcr0kS/1DuPBtUFdWjzLqyUuCiyHjyJB6srBV/0=
 cosmossdk.io/errors v1.0.1/go.mod h1:MeelVSZThMi4bEakzhhhE/CKqVv3nOJDA25bIqRDu/U=
-cosmossdk.io/math v1.3.0 h1:RC+jryuKeytIiictDslBP9i1fhkVm6ZDmZEoNP316zE=
-cosmossdk.io/math v1.3.0/go.mod h1:vnRTxewy+M7BtXBNFybkuhSH4WfedVAAnERHgVFhp3k=
+cosmossdk.io/math v1.4.0 h1:XbgExXFnXmF/CccPPEto40gOO7FpWu9yWNAZPN3nkNQ=
+cosmossdk.io/math v1.4.0/go.mod h1:O5PkD4apz2jZs4zqFdTr16e1dcaQCc5z6lkEnrrppuk=
 github.com/cosmos/cosmos-proto v1.0.0-beta.4 h1:aEL7tU/rLOmxZQ9z4i7mzxcLbSCY48OdY7lIWTLG7oU=
 github.com/cosmos/cosmos-proto v1.0.0-beta.4/go.mod h1:oeB+FyVzG3XrQJbJng0EnV8Vljfk9XvTIpGILNU/9Co=
 github.com/cosmos/gogoproto v1.4.12 h1:vB6Lbe/rtnYGjQuFxkPiPYiCybqFT8QvLipDZP8JpFE=