bump(deps): update dependency postcss to ^8.4.28 (#114)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [postcss](https://postcss.org/)
([source](https://togithub.com/postcss/postcss)) | [`^8.4.27` ->
`^8.4.28`](https://renovatebot.com/diffs/npm/postcss/8.4.27/8.4.28) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/postcss/8.4.28?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/postcss/8.4.28?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/postcss/8.4.27/8.4.28?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|

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### ⚠ Dependency Lookup Warnings ⚠

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### Release Notes

<details>
<summary>postcss/postcss (postcss)</summary>

###
[`v8.4.28`](https://togithub.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8428)

[Compare
Source](https://togithub.com/postcss/postcss/compare/8.4.27...8.4.28)

-   Fixed `Root.source.end` for better source map (by Romain Menke).
-   Fixed `Result.root` types when `process()` has no parser.

</details>

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app/package.json

@@ -59,7 +59,7 @@
     "@types/react": "~18.2.14",
     "@types/react-native": "^0.72.2",
     "classnames": "^2.3.2",
-    "postcss": "^8.4.27",
+    "postcss": "^8.4.28",
     "tailwindcss": "^3.3.3"
   }
 }

yarn.lock

@@ -7296,10 +7296,10 @@ postcss@^8.4.23, postcss@~8.4.21:
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
-postcss@^8.4.27:
-  version "8.4.27"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.27.tgz#234d7e4b72e34ba5a92c29636734349e0d9c3057"
-  integrity sha512-gY/ACJtJPSmUFPDCHtX78+01fHa64FaU4zaaWfuh1MhGJISufJAH4cun6k/8fwsHYeK4UQmENQK+tRLCFJE8JQ==
+postcss@^8.4.28:
+  version "8.4.28"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.28.tgz#c6cc681ed00109072816e1557f889ef51cf950a5"
+  integrity sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"