[core] Update ltchiptool to v4.0.0

platform.json

@@ -101,7 +101,7 @@
     },
     "tool-ltchiptool": {
       "type": "uploader",
-      "version": "https://github.com/libretiny-eu/ltchiptool#v4.0.0a4",
+      "version": "https://github.com/libretiny-eu/ltchiptool#v4.0.0",
       "version_prefix": true,
       "note": "This is used only for C/C++ code from ltchiptool."
     },

platform.py

@@ -27,7 +27,7 @@ def check_ltchiptool(install: bool):
         print("Installing/updating ltchiptool")
         system(
             f'"{sys.executable}" -m pip install -U --force-reinstall '
-            f'"ltchiptool >= {LTCHIPTOOL_VERSION[1:]}a0, < 5.0"'
+            f'"ltchiptool >= {LTCHIPTOOL_VERSION[1:]}, < 5.0"'
         )
 
         # unload all modules from the old version