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/
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