Update IRRemote ESP8266 to 2.6.2 and add ESP32 support

lib/IRremoteESP8266/.github/Contributors.md

@@ -2,7 +2,7 @@
 ### Main contributors & maintainers
 - [Mark Szabo](https://github.com/markszabo/) : Initial IR sending on ESP8266
 - [Sébastien Warin](https://github.com/sebastienwarin/) (http://sebastien.warin.fr) : Initial IR receiving on ESP8266
-- [David Conran](https://github.com/crankyoldgit/)
+- [David Conran](https://github.com/crankyoldgit/) : ESP32 support and pretty much everything else.
 - [Roi Dayan](https://github.com/roidayan/)
 - [Marcos de Alcântara Marinho](https://github.com/marcosamarinho/)
 - [Massimiliano Pinto](https://github.com/pintomax/)
@@ -13,6 +13,7 @@
 - [Denes Varga](https://github.com/denxhun/)
 - [Brett T. Warden](https://github.com/bwarden/)
 - [Fabien Valthier](https://github.com/hcoohb)
+- [Ajay Pala](https://github.com/ajaypala/)
 
 All contributors can be found on the [contributors site](https://github.com/markszabo/IRremoteESP8266/graphs/contributors).