[res] Update resources to c++23

Test: manual
Change-Id: I769e907103cf0dbf1e02b95a78040ebc722c05a9
diff --git a/tools/aapt2/Android.bp b/tools/aapt2/Android.bp
index bd0a4bc..52c5d48 100644
--- a/tools/aapt2/Android.bp
+++ b/tools/aapt2/Android.bp
@@ -36,6 +36,7 @@
 
 cc_defaults {
     name: "aapt2_defaults",
+    cpp_std: "gnu++2b",
     cflags: [
         "-Wall",
         "-Werror",