Update nwtgck/actions-netlify action to v3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
nwtgck/actions-netlify	action	major	v2.1.0 -> v3.0.0

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Release Notes

nwtgck/actions-netlify (nwtgck/actions-netlify)

### [`v3.0.0`](https://togithub.com/nwtgck/actions-netlify/releases/tag/v3.0.0) [Compare Source](https://togithub.com/nwtgck/actions-netlify/compare/v2.1.0...v3.0.0) ##### Changed - Update dependencies - Updates the default runtime to node20

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Configuration

📅 Schedule: Branch creation - "before 3am on Monday" (UTC), Automerge - At any time (no schedule defined).

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♻ 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.

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

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[cypress[bot]]

Passing run #4703 ↗︎

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Details:

Update nwtgck/actions-netlify action to v3
Project: NotGovUK	Commit: 0463f8ca28
Status: Passed	Duration: 12:06 💡
Started: Mar 14, 2024 7:23 PM	Ended: Mar 14, 2024 7:35 PM

Review all test suite changes for PR #941 ↗︎

[cypress[bot]]

Passing run #4707 ↗︎

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Details:

Merge 0463f8ca28a8f9da89fca94b38a0a618a0df761e into 2bd929bc9d7786d44a94672759f3...
Project: NotGovUK	Commit: 8c0959d635 ℹ️
Status: Passed	Duration: 13:12 💡
Started: Mar 14, 2024 7:25 PM	Ended: Mar 14, 2024 7:38 PM

Review all test suite changes for PR #941 ↗︎