call getKnownJavacLints error when locale language is chinese

[ningpengtao-coder]

reason: When compiling graalvmjdk, mx calls getKnownJavacLints if the local language is Chinese, it will cause UnicodeDecodeError: 'utf-8' codec can't decode byte 0xbf in position 19: invalid start byte, and there is no problem if the local language is English resolution: Add errors="ignore" named parameter to ignore errors when decoding strings