fix(deps): update module github.com/alecthomas/kong to v1.4.0 (main)

[cilium-renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/alecthomas/kong	require	minor	v1.3.0 -> v1.4.0

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Release Notes

alecthomas/kong (github.com/alecthomas/kong)

### [`v1.4.0`](https://redirect.github.com/alecthomas/kong/compare/v1.3.0...v1.4.0) [Compare Source](https://redirect.github.com/alecthomas/kong/compare/v1.3.0...v1.4.0)

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