pidgin/nest

Update for the 2.14.3 release

2021-04-09, Sorvival
d386f4debb86
Update for the 2.14.3 release

- Modify config.toml to use the new version
- Add notes for 2.14.3 to ChangeLog
- Add blog post for Pidgin 2.14.3

Testing Done:
ran `dev-server.sh` and verified contents were the expected

Reviewed at https://reviews.imfreedom.org/r/600/
Alan Hoskins <alanhoskins@gmail.com>
Elliott Sales de Andrade <quantum.analyst@gmail.com>
Frederick F. Kautz IV <fkautz@alumni.cmu.edu>
Gary Kramlich <grim@reaperworld.com>
Harrison <harrisonhopkins@gmail.com>
Jason Allan <code@jasonderrythomas.com>
John Bailey <rekkanoryo@rekkanoryo.org>
Richard Laager <rlaager@wiktel.com>
Robert Vehse <robertvehse@fastmail.fm>
Sorvival <sorvival@tutanota.com>
Zero <programmingzero@gmail.com>