Bugfix/PPPOS fix stack smashing, modify get operator and add access technology Closes IDFGH-2262 and IDFGH-3844 See merge request espressif/esp-idf!11557 (cherry picked from commit5d92cdc5d9)d59ffd91Expose get operator name command. Add get access tech935edc9erename dce parameter7f3bcc13esp-modem: prefix the crash issue both bg96 and sim800l in OVERALL mode