fix: CVE-2026-45623 security vulnerability

Automated dependency upgrade by OrbisAI Security

Author: anupamme

package.json

@@ -157,5 +157,8 @@
     "webpack-dev-server": "^6.0.0",
     "webpack-isomorphic-tools": "^4.0.0"
   },
-  "packageManager": "yarn@4.17.1"
+  "packageManager": "yarn@4.17.1",
+  "resolutions": {
+    "postcss": "8.5.12"
+  }
 }

yarn.lock

@@ -4711,7 +4711,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"chalk@npm:^2.3.2, chalk@npm:^2.4.1, chalk@npm:^2.4.2":
+"chalk@npm:^2.3.2, chalk@npm:^2.4.2":
   version: 2.4.2
   resolution: "chalk@npm:2.4.2"
   dependencies:
@@ -11152,25 +11152,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^6.0.1, postcss@npm:^6.0.2":
-  version: 6.0.23
-  resolution: "postcss@npm:6.0.23"
-  dependencies:
-    chalk: "npm:^2.4.1"
-    source-map: "npm:^0.6.1"
-    supports-color: "npm:^5.4.0"
-  checksum: 10/218e21b4f42b2147b03c1a8898271629c9fd5b53a08c6e3e1f0f7808bdcaf21a51f0e2040ab32ce92a083f37d07b205f581b2923d6bb6cdcf80cf275ba2b7225
-  languageName: node
-  linkType: hard
-
-"postcss@npm:^8.4.40":
-  version: 8.5.8
-  resolution: "postcss@npm:8.5.8"
+"postcss@npm:8.5.12":
+  version: 8.5.12
+  resolution: "postcss@npm:8.5.12"
   dependencies:
     nanoid: "npm:^3.3.11"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10/cbacbfd7f767e2c820d4bf09a3a744834dd7d14f69ff08d1f57b1a7defce9ae5efcf31981890d9697a972a64e9965de677932ef28e4c8ba23a87aad45b82c459
+  checksum: 10/ec6b79b68c363eca3c8ffceb134a4ab637274aee6ac0857614bf7c18d40ce4ce5f9036edec57b7e0be99895724d2599d0ec7328dbd7f407204e7548697b322f1
   languageName: node
   linkType: hard
 
@@ -13303,7 +13292,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"supports-color@npm:^5.3.0, supports-color@npm:^5.4.0":
+"supports-color@npm:^5.3.0":
   version: 5.5.0
   resolution: "supports-color@npm:5.5.0"
   dependencies: