fix: allow various formatting styles for macro in testing regex

Author: NickLarsenNZ

crates/stackable-versioned-macros/src/test_utils.rs

@@ -15,7 +15,7 @@ use crate::versioned_impl;
 const DELIMITER: &str = "// ---\n";
 
 static REGEX: LazyLock<Regex> = LazyLock::new(|| {
-    Regex::new(r"#\[versioned\(\n(?P<args>[[:ascii:]]+)\n\)\]")
+    Regex::new(r"#\[versioned\(\s*(?P<args>[[:ascii:]]+)\s*\)\]")
         .expect("failed to compile versioned regex")
 });