Update links to IRC channel

Author: adamgreig

CODE_OF_CONDUCT.md

@@ -30,7 +30,7 @@ In the Rust community we strive to go the extra step to look out for each other.
 
 And if someone takes issue with something you said or did, resist the urge to be defensive. Just stop doing what it was they complained about and apologize. Even if you feel you were misinterpreted or unfairly accused, chances are good there was something you could've communicated better — remember that it's your responsibility to make your fellow Rustaceans comfortable. Everyone wants to get along and we are all here first and foremost because we want to talk about cool technology. You will find that people will be eager to assume good intent and forgive as long as you earn their trust.
 
-The enforcement policies listed above apply to all official embedded WG venues; including the official Matrix room (#rust-embedded:matrix.org) and linked IRC channels (#rust-embedded on Freenode); GitHub repositories under rust-embedded; and all forums under rust-embedded.org (forum.rust-embedded.org).
+The enforcement policies listed above apply to all official embedded WG venues; including the official Matrix room (#rust-embedded:matrix.org) and linked IRC channels (#rust-embedded on Libera); GitHub repositories under rust-embedded; and all forums under rust-embedded.org (forum.rust-embedded.org).
 
 *Adapted from the [Node.js Policy on Trolling](http://blog.izs.me/post/30036893703/policy-on-trolling) as well as the [Contributor Covenant v1.3.0](https://www.contributor-covenant.org/version/1/3/0/).*
 

README.md

@@ -379,9 +379,8 @@ Each team can be privately contacted via the following e-mail addresses:
 You can usually find the members of the embedded WG on the Rust Embedded Matrix room
 ([#rust-embedded:matrix.org](https://matrix.to/#/!BHcierreUuwCMxVqOf:matrix.org)).
 
-Our Matrix room is logged by [logbot] on the bridged IRC channel, and you can find the logs at: https://freenode.logbot.info/rust-embedded
+Our Matrix room is logged by on the bridged IRC channel, and you can find the logs at: https://libera.irclog.whitequark.org/rust-embedded/
 
-[logbot]: https://freenode.logbot.info
 [@Disasm]: https://github.com/Disasm
 [@Emilgardis]: https://github.com/Emilgardis
 [@adamgreig]: https://github.com/adamgreig

ops/matrix.md

@@ -57,7 +57,7 @@ The Matrix room is bridged to an IRC channel, allowing IRC users to communicate
 with users in the Matrix room. This is provided as a convenience to IRC users
 and the WG may revisit the bridge in case it compromises the Matrix users experience.
 
-Our IRC channel is `#rust-embedded` on [Freenode](https://freenode.net).
+Our IRC channel is `#rust-embedded` on [Libera](https://libera.chat).
 
 ### IRC Administration