v1.9.0 to fix ESP32 chipID

### Release v1.9.0

1. Fix ESP32 chipID. Check [Help for storing variables in memory (non-volatile) #87](khoih-prog/ESP_WiFiManager#87 (comment))
2. Add ESP32 getChipID() and getChipOUI() functions
3. Remove dependency on `LittleFS_esp32` library to prevent PIO error when using new ESP32 core v1.0.6+

Author: khoih-prog

changelog.md

@@ -31,7 +31,7 @@
 
 ## Changelog
 
-### Releases v1.9.0
+### Release v1.9.0
 
 1. Fix ESP32 chipID. Check [Help for storing variables in memory (non-volatile) #87](https://github.com/khoih-prog/ESP_WiFiManager/discussions/87#discussioncomment-3593028)
 2. Add ESP32 getChipID() and getChipOUI() functions