fix(test): stick tree-sitter-cpp fixture grammar to a specific hash

It's needed to fix tests fail: https://github.com/tree-sitter/tree-sitter-cpp/pull/202#issuecomment-1546279646

See CLI xtask notes in https://github.com/tree-sitter/tree-sitter/issues/1223

cli/benches/benchmark.rs

@@ -104,6 +104,7 @@ fn main() {
 
             parse(&path, max_path_length, |source| {
                 Query::new(language, str::from_utf8(source).unwrap())
+                    .with_context(|| format!("Query file path: {path:?}"))
                     .expect("Failed to parse query");
             });
         }