chore: Add dev comment about commented out unit tests

Author: Techassi

rust/boil/src/main.rs

@@ -114,6 +114,9 @@ async fn main() -> Result<(), Error> {
 
 #[cfg(test)]
 mod tests {
+    // TODO (@Techassi): These tests are currently commented out because rstest
+    // contains a bug related to the Rust's core library and the local core
+    // module. It is fixed upstream, but not released yet.
     // use rstest::rstest;
 
     // use super::*;