submodules: bump external/cli from aec1603 to d7a0ccc

Bumps [external/cli](https://github.com/oasisprotocol/cli) from `aec1603` to `d7a0ccc`.
- [Release notes](https://github.com/oasisprotocol/cli/releases)
- [Commits](oasisprotocol/cli@aec1603...d7a0ccc)

---
updated-dependencies:
- dependency-name: external/cli
  dependency-version: d7a0ccca26f10ee34efbd18d1e7ebe6a13c34720
  dependency-type: direct:production
...

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Author: dependabot[bot]