[internal]: Upgrade salsa (#16794)

## Summary

Another salsa upgrade. 

The main motivation is to stay on a recent salsa version because there
are still a lot of breaking changes happening.
The most significant changes in this update:

* Salsa no longer derives `Debug` by default. It now requires
`interned(debug)` (or similar)
* This version ships the foundation for garbage collecting interned
values. However, this comes at the cost that queries now track which
interned values they created (or read). The micro benchmarks in the
salsa repo showed a significant perf regression. Will see if this also
visible in our benchmarks.

## Test Plan

`cargo test`

crates/red_knot_python_semantic/src/unpack.rs

@@ -26,7 +26,7 @@ use crate::Db;
 /// * a return type of a cross-module query
 /// * a field of a type that is a return type of a cross-module query
 /// * an argument of a cross-module query
-#[salsa::tracked]
+#[salsa::tracked(debug)]
 pub(crate) struct Unpack<'db> {
     pub(crate) file: File,