fix(deps): update dependency next-seo to v5.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
next-seo	5.3.0 -> 5.4.0

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Release Notes

garmeeh/next-seo

### [`v5.4.0`](https://togithub.com/garmeeh/next-seo/releases/v5.4.0) [Compare Source](https://togithub.com/garmeeh/next-seo/compare/v5.3.0...v5.4.0) - Updates to core toJson ([#​948](https://togithub.com/garmeeh/next-seo/issues/948)) [`f349155`](https://togithub.com/garmeeh/next-seo/commit/f349155) NOTE: This will change the output slightly to ensure it is fully compatible with JSON.

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