fix: actually set the correct regex

set_version.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-export version=0.5.3-1
+export version=0.5.3-2
 echo "pub const VERSION: &str = \"${version}\";" > src/version.rs

src/util/regex.rs

@@ -1,4 +1,9 @@
 use once_cell::sync::Lazy;
 use regex::Regex;
 
-pub static RE_USERNAME: Lazy<Regex> = Lazy::new(|| Regex::new(r"^[^\u200B]+$").unwrap());
+/// Regex for valid usernames
+///
+/// Block zero width space
+/// Block lookalike characters
+pub static RE_USERNAME: Lazy<Regex> =
+    Lazy::new(|| Regex::new(r"^[^\u200BА-Яа-яΑ-Ωα-ω]+$").unwrap());

src/version.rs

@@ -1 +1 @@
-pub const VERSION: &str = "0.5.3-1";
+pub const VERSION: &str = "0.5.3-2";