chore(deps): bump postcss resolution 8.5.12 in both trees (yarn audit gate)

Clears GHSA-6g55-p6wh-862q (arbitrary file read via attacker-controlled
sourceMappingURL), high, reachable via next>postcss.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: atepem

frontend/package.json

@@ -18,7 +18,7 @@
     "lodash-es": "4.18.1",
     "minimatch": "9.0.9",
     "picomatch": "4.0.4",
-    "postcss": "8.5.10",
+    "postcss": "8.5.12",
     "sharp": "0.35.3",
     "tar": "7.5.16",
     "ws": "8.21.0"

frontend/yarn.lock

@@ -5505,10 +5505,10 @@ postcss-value-parser@^4.0.2:
   resolved "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@8.4.31, postcss@8.4.49, postcss@8.5.10:
-  version "8.5.10"
-  resolved "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz#8992d8c30acf3f12169e7c09514a12fed7e48356"
-  integrity sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==
+postcss@8.4.31, postcss@8.4.49, postcss@8.5.12:
+  version "8.5.12"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.12.tgz#cd0c0f667f7cb0521e2313234ea6e707a9ec1ddb"
+  integrity sha512-W62t/Se6rA0Az3DfCL0AqJwXuKwBeYg6nOaIgzP+xZ7N5BFCI7DYi1qs6ygUYT6rvfi6t9k65UMLJC+PHZpDAA==
   dependencies:
     nanoid "^3.3.11"
     picocolors "^1.1.1"

package.json

@@ -15,7 +15,7 @@
     "lodash": "4.18.1",
     "node-gyp": "12.3.0",
     "picomatch": "2.3.2",
-    "postcss": "8.5.10",
+    "postcss": "8.5.12",
     "serialize-javascript": "7.0.5",
     "sharp": "0.35.3",
     "tar": "7.5.16",

yarn.lock

@@ -5050,10 +5050,10 @@ postcss-value-parser@^4.0.2:
   resolved "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@8.4.31, postcss@8.4.49, postcss@8.5.10:
-  version "8.5.10"
-  resolved "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz#8992d8c30acf3f12169e7c09514a12fed7e48356"
-  integrity sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==
+postcss@8.4.31, postcss@8.4.49, postcss@8.5.12:
+  version "8.5.12"
+  resolved "https://registry.npmjs.org/postcss/-/postcss-8.5.12.tgz#cd0c0f667f7cb0521e2313234ea6e707a9ec1ddb"
+  integrity sha512-W62t/Se6rA0Az3DfCL0AqJwXuKwBeYg6nOaIgzP+xZ7N5BFCI7DYi1qs6ygUYT6rvfi6t9k65UMLJC+PHZpDAA==
   dependencies:
     nanoid "^3.3.11"
     picocolors "^1.1.1"