fix(deps): update dependency postcss to v8.4.48 (#803)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [postcss](https://postcss.org/)
([source](https://redirect.github.com/postcss/postcss)) | [`8.4.47` ->
`8.4.48`](https://renovatebot.com/diffs/npm/postcss/8.4.47/8.4.48) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/postcss/8.4.48?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/postcss/8.4.48?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/postcss/8.4.47/8.4.48?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/postcss/8.4.47/8.4.48?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v8.4.48`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8448)

[Compare
Source](https://redirect.github.com/postcss/postcss/compare/8.4.47...8.4.48)

- Fixed position calculation in error/warnings methods (by
[@&#8203;romainmenke](https://redirect.github.com/romainmenke)).

</details>

---

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yarn.lock

@@ -9544,7 +9544,7 @@ pathe@^1.1.2:
   resolved "https://registry.yarnpkg.com/pathe/-/pathe-1.1.2.tgz#6c4cb47a945692e48a1ddd6e4094d170516437ec"
   integrity sha512-whLdWMYL2TwI08hn8/ZqAbrVemu0LNaNNJZX73O6qaIdCTfXutsLhMkjdENX0qhsQ9uIimo4/aQOmXkoon2nDQ==
 
-picocolors@^1.0.0, picocolors@^1.0.1, picocolors@^1.1.0:
+picocolors@^1.0.0, picocolors@^1.0.1, picocolors@^1.1.0, picocolors@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.1.1.tgz#3d321af3eab939b083c8f929a1d12cda81c26b6b"
   integrity sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==
@@ -9925,12 +9925,12 @@ postcss-zindex@^6.0.2:
   integrity sha512-5BxW9l1evPB/4ZIc+2GobEBoKC+h8gPGCMi+jxsYvd2x0mjq7wazk6DrP71pStqxE9Foxh5TVnonbWpFZzXaYg==
 
 postcss@^8.4.21, postcss@^8.4.23, postcss@^8.4.24, postcss@^8.4.26, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.4.41:
-  version "8.4.47"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.47.tgz#5bf6c9a010f3e724c503bf03ef7947dcb0fea365"
-  integrity sha512-56rxCq7G/XfB4EkXq9Egn5GCqugWvDFjafDOThIdMBsI15iqPqR5r15TfSr1YPYeEI19YeaXMCbY6u88Y76GLQ==
+  version "8.4.48"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.48.tgz#765f3f8abaa2a2b065cdddbc57ad4cb5a76e515f"
+  integrity sha512-GCRK8F6+Dl7xYniR5a4FYbpBzU8XnZVeowqsQFYdcXuSbChgiks7qybSkbvnaeqv0G0B+dd9/jJgH8kkLDQeEA==
   dependencies:
     nanoid "^3.3.7"
-    picocolors "^1.1.0"
+    picocolors "^1.1.1"
     source-map-js "^1.2.1"
 
 preact@^10.10.0: