feat(tools): Enforce utf-8 encoding with open() function

components/espcoredump/espcoredump.py

@@ -4,7 +4,6 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 #
-
 import json
 import logging
 import os.path
@@ -26,7 +25,7 @@ def get_prefix_map_gdbinit_path(prog_path):  # type: (str) -> Any
         logging.warning('%s does not exist. Please build the app with "idf.py build"', desc_path)
         return ''
 
-    with open(desc_path, 'r') as f:
+    with open(desc_path, 'r', encoding='utf-8') as f:
         project_desc = json.load(f)
 
     return project_desc.get('debug_prefix_map_gdbinit')