[Buildsystem] Fix encoding when reading files

misc/scripts/check_ci_log.py

@@ -9,7 +9,7 @@ if len(sys.argv) < 2:
 
 fname = sys.argv[1]
 
-with open(fname.strip(), "r") as fileread:
+with open(fname.strip(), "r", encoding="utf-8") as fileread:
     file_contents = fileread.read()
 
 # If find "ERROR: AddressSanitizer:", then happens invalid read or write

misc/scripts/copyright_headers.py

@@ -69,7 +69,7 @@ for f in sys.argv[1:]:
     # In a second pass, we skip all consecutive comment lines starting with "/*",
     # then we can append the rest (step 2).
 
-    with open(fname.strip(), "r") as fileread:
+    with open(fname.strip(), "r", encoding="utf-8") as fileread:
         line = fileread.readline()
         header_done = False