gitignore: cover dist*/ so PyInstaller variant dirs (dist5 etc.) can't be committed by accident

Author: HarryXin0919

.gitignore

@@ -17,7 +17,7 @@ __pycache__/
 .venv/
 venv/
 
-# python build artifacts
+# python build artifacts (dist*/ 也挡 PyInstaller 的 dist2/dist5 等变体目录)
 *.egg-info/
 build/
-dist/
+dist*/