Merge branch 'update/cjson_v1_7_12_v3.1' into 'release/v3.1'

Update cJSON to v1.7.12 (v3.1)

See merge request espressif/esp-idf!5853
This commit is contained in:
Jiang Jiang Jian
2019-08-26 18:29:52 +08:00