chore: upgrade postcss (#2723)

## Proposed change

Unblock lock file maintenance
`stylelint` comes with dependency `"postcss": "^8.4.49"` which is now
resolved to `8.5.1`
so we need to make our version of `postcss` match it

## Related issues

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package.json

@@ -253,7 +253,7 @@
     "nx": "~19.8.0",
     "nx-cloud": "^19.1.0",
     "playwright-lighthouse": "~4.0.0",
-    "postcss": "~8.4.31",
+    "postcss": "~8.5.1",
     "postcss-scss": "~4.0.9",
     "prism-themes": "^1.9.0",
     "prismjs": "^1.28.0",

packages/@o3r/stylelint-plugin/package.json

@@ -83,7 +83,7 @@
     "jsonc-eslint-parser": "~2.4.0",
     "nx": "~19.8.0",
     "pid-from-port": "^1.1.3",
-    "postcss": "~8.4.31",
+    "postcss": "~8.5.1",
     "postcss-scss": "~4.0.9",
     "rimraf": "^5.0.1",
     "rxjs": "^7.8.1",

yarn.lock

@@ -9483,7 +9483,7 @@ __metadata:
     pixelmatch: "npm:^5.2.1"
     playwright-lighthouse: "npm:~4.0.0"
     pngjs: "npm:^7.0.0"
-    postcss: "npm:~8.4.31"
+    postcss: "npm:~8.5.1"
     postcss-scss: "npm:~4.0.9"
     prism-themes: "npm:^1.9.0"
     prismjs: "npm:^1.28.0"
@@ -10709,7 +10709,7 @@ __metadata:
     jsonc-eslint-parser: "npm:~2.4.0"
     nx: "npm:~19.8.0"
     pid-from-port: "npm:^1.1.3"
-    postcss: "npm:~8.4.31"
+    postcss: "npm:~8.5.1"
     postcss-scss: "npm:~4.0.9"
     rimraf: "npm:^5.0.1"
     rxjs: "npm:^7.8.1"
@@ -29018,7 +29018,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.7":
+"nanoid@npm:^3.3.7, nanoid@npm:^3.3.8":
   version: 3.3.8
   resolution: "nanoid@npm:3.3.8"
   bin:
@@ -31708,14 +31708,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.2.14, postcss@npm:^8.4.23, postcss@npm:^8.4.24, postcss@npm:^8.4.31, postcss@npm:^8.4.33, postcss@npm:^8.4.38, postcss@npm:^8.4.43, postcss@npm:^8.4.49, postcss@npm:~8.4.31":
-  version: 8.4.49
-  resolution: "postcss@npm:8.4.49"
+"postcss@npm:^8.2.14, postcss@npm:^8.4.23, postcss@npm:^8.4.24, postcss@npm:^8.4.31, postcss@npm:^8.4.33, postcss@npm:^8.4.38, postcss@npm:^8.4.43, postcss@npm:^8.4.49, postcss@npm:~8.5.1":
+  version: 8.5.1
+  resolution: "postcss@npm:8.5.1"
   dependencies:
-    nanoid: "npm:^3.3.7"
+    nanoid: "npm:^3.3.8"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10/28fe1005b1339870e0a5006375ba5ac1213fd69800f79e7db09c398e074421ba6e162898e94f64942fed554037fd292db3811d87835d25ab5ef7f3c9daacb6ca
+  checksum: 10/1fbd28753143f7f03e4604813639918182b15343c7ad0f4e72f3875fc2cc0b8494c887f55dc05008fad5fbf1e1e908ce2edbbce364a91f84dcefb71edf7cd31d
   languageName: node
   linkType: hard