maintainers: update danth matrix account

Changed files
+1 -1
maintainers
+1 -1
maintainers/maintainer-list.nix
···
danth = {
name = "Daniel Thwaites";
email = "danthwaites30@btinternet.com";
-
matrix = "@danth:pwak.org";
+
matrix = "@danth:danth.me";
github = "danth";
githubId = 28959268;
keys = [{