chore(deps): update dependency postcss to v8.4.49 (#414)

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` ->
`8.4.49`](https://renovatebot.com/diffs/npm/postcss/8.4.47/8.4.49) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/postcss/8.4.49?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/postcss/8.4.49?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/postcss/8.4.47/8.4.49?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/postcss/8.4.47/8.4.49?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v8.4.49`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8449)

[Compare
Source](https://redirect.github.com/postcss/postcss/compare/8.4.48...8.4.49)

- Fixed custom syntax without `source.offset` (by
[@&#8203;romainmenke](https://redirect.github.com/romainmenke)).

###
[`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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---

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yarn.lock

@@ -9981,10 +9981,10 @@ picocolors@^1.0.1:
   resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.1.tgz#a8ad579b571952f0e5d25892de5445bcfe25aaa1"
   integrity sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew==
 
-picocolors@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.1.0.tgz#5358b76a78cde483ba5cef6a9dc9671440b27d59"
-  integrity sha512-TQ92mBOW0l3LeMeyLV6mzy/kWr8lkd/hp3mTg7wYK7zJhuBStmGMBG0BdeDZS/dZx1IukaX6Bk11zcln25o1Aw==
+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==
 
 picomatch@^2.0.4, picomatch@^2.2.1, picomatch@^2.2.2, picomatch@^2.2.3, picomatch@^2.3.0, picomatch@^2.3.1:
   version "2.3.1"
@@ -10340,12 +10340,12 @@ [email protected]:
     source-map-js "^1.0.2"
 
 postcss@^8.2.14, postcss@^8.4.21, postcss@^8.4.32:
-  version "8.4.47"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.47.tgz#5bf6c9a010f3e724c503bf03ef7947dcb0fea365"
-  integrity sha512-56rxCq7G/XfB4EkXq9Egn5GCqugWvDFjafDOThIdMBsI15iqPqR5r15TfSr1YPYeEI19YeaXMCbY6u88Y76GLQ==
+  version "8.4.49"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.49.tgz#4ea479048ab059ab3ae61d082190fabfd994fe19"
+  integrity sha512-OCVPnIObs4N29kxTjzLfUryOkvZEq+pf8jTF0lg8E7uETuWHA+v7j3c/xJmiqpX450191LlmZfUKkXxkTry7nA==
   dependencies:
     nanoid "^3.3.7"
-    picocolors "^1.1.0"
+    picocolors "^1.1.1"
     source-map-js "^1.2.1"
 
 prebuild-install@^7.1.1: