build(deps): Bump cosmossdk.io/api from 0.7.3 to 0.7.6 in /x/tx

Bumps [cosmossdk.io/api](https://github.com/cosmos/cosmos-sdk) from 0.7.3 to 0.7.6.
- [Release notes](https://github.com/cosmos/cosmos-sdk/releases)
- [Changelog](https://github.com/cosmos/cosmos-sdk/blob/main/CHANGELOG.md)
- [Commits](cosmos/cosmos-sdk@api/v0.7.3...api/v0.7.6)

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

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

x/tx/go.mod

@@ -3,7 +3,7 @@ module cosmossdk.io/x/tx
 go 1.21
 
 require (
-	cosmossdk.io/api v0.7.3
+	cosmossdk.io/api v0.7.6
 	cosmossdk.io/core v0.11.0
 	cosmossdk.io/errors v1.0.1
 	cosmossdk.io/math v1.3.0

x/tx/go.sum

@@ -1,5 +1,5 @@
-cosmossdk.io/api v0.7.3 h1:V815i8YOwOAQa1rLCsSMjVG5Gnzs02JLq+l7ks8s1jk=
-cosmossdk.io/api v0.7.3/go.mod h1:IcxpYS5fMemZGqyYtErK7OqvdM0C8kdW3dq8Q/XIG38=
+cosmossdk.io/api v0.7.6 h1:PC20PcXy1xYKH2KU4RMurVoFjjKkCgYRbVAD4PdqUuY=
+cosmossdk.io/api v0.7.6/go.mod h1:IcxpYS5fMemZGqyYtErK7OqvdM0C8kdW3dq8Q/XIG38=
 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=