deps: update module github.com/hetznercloud/hcloud-go/v2 to v2.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/hetznercloud/hcloud-go/v2	require	minor	v2.0.0 -> v2.4.0

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Release Notes

hetznercloud/hcloud-go (github.com/hetznercloud/hcloud-go/v2)

### [`v2.4.0`](https://togithub.com/hetznercloud/hcloud-go/releases/tag/v2.4.0) [Compare Source](https://togithub.com/hetznercloud/hcloud-go/compare/v2.3.0...v2.4.0) ##### Features - **iso:** support deprecation info API ([#​331](https://togithub.com/hetznercloud/hcloud-go/issues/331)) ([b3a3621](https://togithub.com/hetznercloud/hcloud-go/commit/b3a36214b21ab1c5add94c2b1896a995342757b6)) ### [`v2.3.0`](https://togithub.com/hetznercloud/hcloud-go/releases/tag/v2.3.0) [Compare Source](https://togithub.com/hetznercloud/hcloud-go/compare/v2.2.0...v2.3.0) ##### Features - add error code unauthorized ([#​313](https://togithub.com/hetznercloud/hcloud-go/issues/313)) ([b77d9e0](https://togithub.com/hetznercloud/hcloud-go/commit/b77d9e04ca903448cc1a22c242f440e67a81a028)) - test with Go 1.21 ([#​319](https://togithub.com/hetznercloud/hcloud-go/issues/319)) ([7ddb2ec](https://togithub.com/hetznercloud/hcloud-go/commit/7ddb2ec057d0e165abb5b8cbd74e95d5bb4add49)) ##### Bug Fixes - ensure the pollBackoffFunc is correctly set ([#​322](https://togithub.com/hetznercloud/hcloud-go/issues/322)) ([2b2f869](https://togithub.com/hetznercloud/hcloud-go/commit/2b2f8697aa09f67dd508c33fe36f7a59b9d3f192)) ### [`v2.2.0`](https://togithub.com/hetznercloud/hcloud-go/releases/tag/v2.2.0) [Compare Source](https://togithub.com/hetznercloud/hcloud-go/compare/v2.1.1...v2.2.0) ##### Features - support resource-specific Action endpoints ([#​295](https://togithub.com/hetznercloud/hcloud-go/issues/295)) ([ddc2ac4](https://togithub.com/hetznercloud/hcloud-go/commit/ddc2ac45489c48a7563806c425222236ab1f8aa0)) ### [`v2.1.1`](https://togithub.com/hetznercloud/hcloud-go/releases/tag/v2.1.1) [Compare Source](https://togithub.com/hetznercloud/hcloud-go/compare/v2.1.0...v2.1.1) ##### Bug Fixes - send more precise progress values ([#​304](https://togithub.com/hetznercloud/hcloud-go/issues/304)) ([867aa63](https://togithub.com/hetznercloud/hcloud-go/commit/867aa632521ad3acfb04beb52b6307330740fc68)) ### [`v2.1.0`](https://togithub.com/hetznercloud/hcloud-go/releases/tag/v2.1.0) [Compare Source](https://togithub.com/hetznercloud/hcloud-go/compare/v2.0.0...v2.1.0) ##### Features - **metadata:** add timeout option ([#​293](https://togithub.com/hetznercloud/hcloud-go/issues/293)) ([913bf74](https://togithub.com/hetznercloud/hcloud-go/commit/913bf74071e03a9c79fd0f8a5a37b1e11b350ae1)) ##### Bug Fixes - **action:** unexpected behaviour when watching non-existing Actions ([#​298](https://togithub.com/hetznercloud/hcloud-go/issues/298)) ([0727d42](https://togithub.com/hetznercloud/hcloud-go/commit/0727d42e26a8112923a84b84bb506c980e07262d)) - **instrumentation:** multiple instrumented clients cause panic ([#​289](https://togithub.com/hetznercloud/hcloud-go/issues/289)) ([c0ef9b6](https://togithub.com/hetznercloud/hcloud-go/commit/c0ef9b6e6e3f36d8c2282c2b7aa9d8687141f291))

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