Fix excessive memory usage for Rust 1.75

rust-lang/rust#120091

Author: atuchin-m

src/blocker.rs

@@ -800,6 +800,7 @@ impl NetworkFilterList {
             };
 
             optimized.append(&mut unoptimizable);
+            optimized.shrink_to_fit();
             optimized_map.insert(key, optimized);
         }