Update tree-sitter-cpp, support injections in tagged rawstrings (#5457)

The grammar now exposes the delimiter of raw-strings.
We can now inject the inner grammar in cases like:

    const char* script = R"js(
      alert('hello world!');
    )js";

runtime/queries/cpp/injections.scm

@@ -1 +1,4 @@
 ; inherits: c
+(raw_string_literal
+  delimiter: (raw_string_delimiter) @injection.language
+  (raw_string_content) @injection.content)