fix(taro-cli): package.json 缺少逗号 (#18655)

Author: Single-Dancer

packages/taro-cli/templates/default/package.json.tmpl

@@ -114,7 +114,7 @@
     "stylelint": "^16.4.0"{{#if typescript }},
     "typescript": "^5.4.5",
     "tsconfig-paths-webpack-plugin": "^4.1.0"{{/if}},
-    "postcss": "^8.5.6"
+    "postcss": "^8.5.6",
     "@types/node": "^18",
     "@types/minimatch": "^5"
   }{{/if}}{{#if (eq compiler "Vite") }}
@@ -152,7 +152,7 @@
     "less": "^4.2.0",{{/if}}{{#if (eq css "Stylus") }}
     "stylus": "^0.63.0",{{/if}}{{#if typescript }}
     "typescript": "^5.4.5",{{/if}}
-    "postcss": "^8.5.6"
+    "postcss": "^8.5.6",
     "@types/minimatch": "^5"
   }{{/if}}
 }