proxy: Fix some warnings by extended clippy checks (#8748)

* Missing blank lifetimes which is now deprecated.
* Matching off unqualified enum variants that could act like variable.
* Missing semicolons.

proxy/src/cache/timed_lru.rs

@@ -58,7 +58,7 @@ impl<K: Hash + Eq, V> Cache for TimedLru<K, V> {
     type LookupInfo<Key> = LookupInfo<Key>;
 
     fn invalidate(&self, info: &Self::LookupInfo<K>) {
-        self.invalidate_raw(info)
+        self.invalidate_raw(info);
     }
 }