Fixed copyright header

tools/ci/check_copyright_ignore.txt

@@ -3182,7 +3182,6 @@ tools/find_build_apps/cmake.py
 tools/find_build_apps/common.py
 tools/gdb_panic_server.py
 tools/gen_esp_err_to_name.py
-tools/idf_monitor_base/ansi_color_converter.py
 tools/idf_monitor_base/argument_parser.py
 tools/idf_monitor_base/chip_specific_config.py
 tools/idf_monitor_base/console_reader.py

tools/idf_monitor_base/ansi_color_converter.py

@@ -1,16 +1,5 @@
-# Copyright 2015-2021 Espressif Systems (Shanghai) CO LTD
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Apache-2.0
 
 import ctypes
 import os
@@ -94,6 +83,7 @@ class ANSIColorConverter(object):
         for b in data:
             b = bytes([b])
             length = len(self.matched)
+
             if b == b'\033':  # ESC
                 self._output_write(self.matched)
                 self.matched = b