deps(patch): update module github.com/urfave/cli/v2 to v2.25.6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/urfave/cli/v2	require	patch	v2.25.5 -> v2.25.6

---

Release Notes

urfave/cli

### [`v2.25.6`](https://togithub.com/urfave/cli/releases/tag/v2.25.6) [Compare Source](https://togithub.com/urfave/cli/compare/v2.25.5...v2.25.6) #### What's Changed - Fix:(issue\_1668) Add test case for sub command of sub command completion by [@​dearchap](https://togithub.com/dearchap) in [https://github.com/urfave/cli/pull/1747](https://togithub.com/urfave/cli/pull/1747) - Update dependencies for v2 by [@​meatballhat](https://togithub.com/meatballhat) in [https://github.com/urfave/cli/pull/1749](https://togithub.com/urfave/cli/pull/1749) - Document slice flags as part of examples (v2) by [@​carhartl](https://togithub.com/carhartl) in [https://github.com/urfave/cli/pull/1751](https://togithub.com/urfave/cli/pull/1751) **Full Changelog**: https://github.com/urfave/cli/compare/v2.25.5...v2.25.6

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.