chore(deps): update dependency postcss to v8.5.6

package.json

@@ -56,7 +56,7 @@
     "eslint": "9.29.0",
     "eslint-config-next": "15.3.3",
     "eslint-config-prettier": "10.1.5",
-    "postcss": "8.5.5",
+    "postcss": "8.5.6",
     "prettier": "3.5.3",
     "prisma": "6.9.0",
     "tailwindcss": "4.1.10",

yarn.lock

@@ -3931,7 +3931,7 @@ __metadata:
     next: "npm:15.3.3"
     next-auth: "npm:^5.0.0-beta.25"
     next-themes: "npm:^0.4.6"
-    postcss: "npm:8.5.5"
+    postcss: "npm:8.5.6"
     prettier: "npm:3.5.3"
     prisma: "npm:6.9.0"
     react: "npm:^19.0.0"
@@ -4338,14 +4338,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.5.5":
-  version: 8.5.5
-  resolution: "postcss@npm:8.5.5"
+"postcss@npm:8.5.6":
+  version: 8.5.6
+  resolution: "postcss@npm:8.5.6"
   dependencies:
     nanoid: "npm:^3.3.11"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10c0/6415873fab84de05c2d8fd18f72ea6654bca437bb4b9f02ca819c438501e4b3a450023e575e17587c6eaa5bedddaaa4dad3af210f5cf166e30cec09cac58baf8
+  checksum: 10c0/5127cc7c91ed7a133a1b7318012d8bfa112da9ef092dddf369ae699a1f10ebbd89b1b9f25f3228795b84585c72aabd5ced5fc11f2ba467eedf7b081a66fad024
   languageName: node
   linkType: hard