new icon: postcss (original, plain, original-wordmark, plain-wordmark) (#1212)

devicon.json

@@ -4794,6 +4794,29 @@
             }
         ]
     },
+    {
+        "name": "postcss",
+        "altnames": [],
+        "tags": [
+            "pre-processor",
+            "css",
+            "framework"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark",
+                "plain",
+                "plain-wordmark"
+            ],
+            "font": [
+                "plain",
+                "plain-wordmark"
+            ]
+        },
+        "color": "#dd3735",
+        "aliases": []
+    },
     {
         "name": "postgresql",
         "altnames": [],