Update dependency postcss to v8.5.15

firmware/website/package-lock.json

@@ -2647,9 +2647,9 @@
 			}
 		},
 		"node_modules/nanoid": {
-			"version": "3.3.11",
-			"resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
-			"integrity": "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==",
+			"version": "3.3.12",
+			"resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.12.tgz",
+			"integrity": "sha512-ZB9RH/39qpq5Vu6Y+NmUaFhQR6pp+M2Xt76XBnEwDaGcVAqhlvxrl3B2bKS5D3NH3QR76v3aSrKaF/Kiy7lEtQ==",
 			"funding": [
 				{
 					"type": "github",
@@ -2775,9 +2775,9 @@
 			}
 		},
 		"node_modules/postcss": {
-			"version": "8.5.10",
-			"resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz",
-			"integrity": "sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==",
+			"version": "8.5.15",
+			"resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
+			"integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
 			"funding": [
 				{
 					"type": "opencollective",
@@ -2794,7 +2794,7 @@
 			],
 			"license": "MIT",
 			"dependencies": {
-				"nanoid": "^3.3.11",
+				"nanoid": "^3.3.12",
 				"picocolors": "^1.1.1",
 				"source-map-js": "^1.2.1"
 			},