Merge branch 'feature/update_expat_v4.0' into 'release/v4.0'

expat: Update library from 2.2.9 to 2.4.1(backport v4.0)

See merge request espressif/esp-idf!15070
This commit is contained in:
Mahavir Jain
2021-09-07 03:35:51 +00:00