modify: update PCL2

[Auto] Update Launcher Version:
  PCL2(stable): 2.12.6 => 2.12.6.2
(Time: 2026-04-04 08:20:11 UTC)

Author: github-actions[bot]

data/launcher.json

@@ -89,7 +89,7 @@
       "title": "Plain Craft Launcher 2",
       "abbr": "PCL2",
       "download": "https://github.com/Hex-Dragon/PCL2/raw/refs/heads/main/%E6%9C%80%E6%96%B0%E6%AD%A3%E5%BC%8F%E7%89%88.zip",
-      "version": "2.12.6",
+      "version": "2.12.6.2",
       "github": "https://github.com/Hex-Dragon/PCL2",
       "url": "https://afdian.com/a/LTCat"
     },