chore(deps): bump stellar-contract-utils in /stellar-lend

Bumps [stellar-contract-utils](https://github.com/OpenZeppelin/stellar-contracts) from 0.6.0 to 0.7.2.
- [Release notes](https://github.com/OpenZeppelin/stellar-contracts/releases)
- [Commits](OpenZeppelin/stellar-contracts@v0.6.0...v0.7.2)

---
updated-dependencies:
- dependency-name: stellar-contract-utils
  dependency-version: 0.7.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]