Update module github.com/knadh/koanf to v1.4.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/knadh/koanf	require	patch	v1.4.0 -> v1.4.1

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Release Notes

knadh/koanf

### [`v1.4.1`](https://togithub.com/knadh/koanf/releases/v1.4.1) [Compare Source](https://togithub.com/knadh/koanf/compare/v1.4.0...v1.4.1) #### What's Changed - fix nil pointer dereference when no callback passed to provider by [@​robinbraemer](https://togithub.com/robinbraemer) in [https://github.com/knadh/koanf/pull/129](https://togithub.com/knadh/koanf/pull/129) - eliminate a type assertion by [@​robinbraemer](https://togithub.com/robinbraemer) in [https://github.com/knadh/koanf/pull/130](https://togithub.com/knadh/koanf/pull/130) - fix: highlight code in README by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/131](https://togithub.com/knadh/koanf/pull/131) - Add tests for env.go by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/132](https://togithub.com/knadh/koanf/pull/132) - Add tests for ProviderWithValue func in env.go by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/133](https://togithub.com/knadh/koanf/pull/133) - Tests added for Read() in env by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/134](https://togithub.com/knadh/koanf/pull/134) - Add tests for dotenv by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/137](https://togithub.com/knadh/koanf/pull/137) - Add tests for parsers/json by [@​gozeloglu](https://togithub.com/gozeloglu) in [https://github.com/knadh/koanf/pull/136](https://togithub.com/knadh/koanf/pull/136) - Fix StringMap and StringsMap by [@​hoshsadiq](https://togithub.com/hoshsadiq) in [https://github.com/knadh/koanf/pull/139](https://togithub.com/knadh/koanf/pull/139) #### New Contributors - [@​robinbraemer](https://togithub.com/robinbraemer) made their first contribution in [https://github.com/knadh/koanf/pull/129](https://togithub.com/knadh/koanf/pull/129) - [@​gozeloglu](https://togithub.com/gozeloglu) made their first contribution in [https://github.com/knadh/koanf/pull/131](https://togithub.com/knadh/koanf/pull/131) - [@​hoshsadiq](https://togithub.com/hoshsadiq) made their first contribution in [https://github.com/knadh/koanf/pull/139](https://togithub.com/knadh/koanf/pull/139) **Full Changelog**: https://github.com/knadh/koanf/compare/v1.4.0...v1.4.1

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