fix(deps): update module github.com/urfave/cli/v2 to v2.20.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/urfave/cli/v2	require	minor	v2.19.2 -> v2.20.2

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Release Notes

urfave/cli

### [`v2.20.2`](https://togithub.com/urfave/cli/releases/tag/v2.20.2) [Compare Source](https://togithub.com/urfave/cli/compare/v2.20.1...v2.20.2) #### What's Changed - Fix:(issue\_1206) Default value shouldnt depend on env variable or val… by [@​dearchap](https://togithub.com/dearchap) in [https://github.com/urfave/cli/pull/1528](https://togithub.com/urfave/cli/pull/1528) **Full Changelog**: https://github.com/urfave/cli/compare/v2.20.1...v2.20.2 ### [`v2.20.1`](https://togithub.com/urfave/cli/releases/tag/v2.20.1) [Compare Source](https://togithub.com/urfave/cli/compare/v2.20.0...v2.20.1) #### What's Changed - Docs: Fix docs from merged PR1498 by [@​dearchap](https://togithub.com/dearchap) in [https://github.com/urfave/cli/pull/1532](https://togithub.com/urfave/cli/pull/1532) - Cleanup: Fix app.go formatting by [@​dearchap](https://togithub.com/dearchap) in [https://github.com/urfave/cli/pull/1533](https://togithub.com/urfave/cli/pull/1533) **Full Changelog**: https://github.com/urfave/cli/compare/v2.20.0...v2.20.1 ### [`v2.20.0`](https://togithub.com/urfave/cli/releases/tag/v2.20.0) [Compare Source](https://togithub.com/urfave/cli/compare/v2.19.3...v2.20.0) #### What's Changed - Cleanup redundant code in App/Command by [@​dearchap](https://togithub.com/dearchap) in [https://github.com/urfave/cli/pull/1498](https://togithub.com/urfave/cli/pull/1498) **Full Changelog**: https://github.com/urfave/cli/compare/v2.19.3...v2.20.0 ### [`v2.19.3`](https://togithub.com/urfave/cli/releases/tag/v2.19.3) [Compare Source](https://togithub.com/urfave/cli/compare/v2.19.2...v2.19.3) #### What's Changed - Build and run `urfave-cli-genflags` via its `Makefile` by [@​meatballhat](https://togithub.com/meatballhat) in [https://github.com/urfave/cli/pull/1526](https://togithub.com/urfave/cli/pull/1526) **Full Changelog**: https://github.com/urfave/cli/compare/v2.19.2...v2.19.3

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