Bump github.com/cosmos/cosmos-sdk from 0.45.11 to 0.50.2

Bumps [github.com/cosmos/cosmos-sdk](https://github.com/cosmos/cosmos-sdk) from 0.45.11 to 0.50.2.
- [Release notes](https://github.com/cosmos/cosmos-sdk/releases)
- [Changelog](https://github.com/cosmos/cosmos-sdk/blob/main/CHANGELOG.md)
- [Commits](cosmos/cosmos-sdk@v0.45.11...v0.50.2)

---
updated-dependencies:
- dependency-name: github.com/cosmos/cosmos-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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