chore(deps): update dependency postcss to v8.5.4 (#1215)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -57,7 +57,7 @@
     "eslint-config-prettier": "10.1.5",
     "eslint-plugin-react-compiler": "19.1.0-rc.2",
     "jsdom": "26.1.0",
-    "postcss": "8.5.3",
+    "postcss": "8.5.4",
     "prettier": "3.5.3",
     "prettier-plugin-tailwindcss": "0.6.11",
     "prisma": "6.8.2",

yarn.lock

@@ -2373,7 +2373,7 @@ __metadata:
     next: "npm:15.4.0-canary.55"
     next-auth: "npm:5.0.0-beta.25"
     numbro: "npm:2.5.0"
-    postcss: "npm:8.5.3"
+    postcss: "npm:8.5.4"
     prettier: "npm:3.5.3"
     prettier-plugin-tailwindcss: "npm:0.6.11"
     prisma: "npm:6.8.2"
@@ -5415,7 +5415,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.6, nanoid@npm:^3.3.8":
+"nanoid@npm:^3.3.11, nanoid@npm:^3.3.6, nanoid@npm:^3.3.8":
   version: 3.3.11
   resolution: "nanoid@npm:3.3.11"
   bin:
@@ -5988,7 +5988,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.5.3, postcss@npm:^8.4.47, postcss@npm:^8.5.3":
+"postcss@npm:8.5.4":
+  version: 8.5.4
+  resolution: "postcss@npm:8.5.4"
+  dependencies:
+    nanoid: "npm:^3.3.11"
+    picocolors: "npm:^1.1.1"
+    source-map-js: "npm:^1.2.1"
+  checksum: 10c0/0feff648614a834f7cd5396ea6b05b658ca0507e10a4eaad03b56c348f6aec93f42a885fc1b30522630c6a7e49ae53b38a061e3cba526f2d9857afbe095a22bb
+  languageName: node
+  linkType: hard
+
+"postcss@npm:^8.4.47, postcss@npm:^8.5.3":
   version: 8.5.3
   resolution: "postcss@npm:8.5.3"
   dependencies: