Update dependency styled-jsx-plugin-postcss to v4 (#415)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [styled-jsx-plugin-postcss](https://togithub.com/giuseppeg/styled-jsx-plugin-postcss) | [`3.0.2` -> `4.0.1`](https://renovatebot.com/diffs/npm/styled-jsx-plugin-postcss/3.0.2/4.0.1) | [![age](https://developer.mend.io/api/mc/badges/age/npm/styled-jsx-plugin-postcss/4.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/styled-jsx-plugin-postcss/4.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/styled-jsx-plugin-postcss/3.0.2/4.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/styled-jsx-plugin-postcss/3.0.2/4.0.1?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>giuseppeg/styled-jsx-plugin-postcss (styled-jsx-plugin-postcss)</summary>

### [`v4.0.1`](https://togithub.com/giuseppeg/styled-jsx-plugin-postcss/compare/4.0.0...v4.0.1)

[Compare Source](https://togithub.com/giuseppeg/styled-jsx-plugin-postcss/compare/4.0.0...v4.0.1)

### [`v4.0.0`](https://togithub.com/giuseppeg/styled-jsx-plugin-postcss/compare/v3.0.2...4.0.0)

[Compare Source](https://togithub.com/giuseppeg/styled-jsx-plugin-postcss/compare/v3.0.2...4.0.0)

</details>

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### Configuration

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package.json

@@ -215,7 +215,7 @@
     "strip-ansi": "7.1.0",
     "styled-components": "6.1.0",
     "styled-jsx": "5.1.2",
-    "styled-jsx-plugin-postcss": "3.0.2",
+    "styled-jsx-plugin-postcss": "4.0.1",
     "swr": "^2.0.0",
     "tailwindcss": "3.3.3",
     "taskr": "1.1.0",