chore: ignore c++20 + clang-18 + gcc-14 findings

Signed-off-by: Matt Leon <mattleon@google.com>

Author: leonm1

bazel/external/v8.patch

@@ -20,11 +20,15 @@ diff --git a/bazel/defs.bzl b/bazel/defs.bzl
 index e957c0fad3..063627b72b 100644
 --- a/bazel/defs.bzl
 +++ b/bazel/defs.bzl
-@@ -131,6 +131,7 @@ def _default_args():
+@@ -131,6 +131,11 @@ def _default_args():
                  "-Wno-redundant-move",
                  "-Wno-return-type",
                  "-Wno-stringop-overflow",
 +                "-Wno-nonnull",
++                "-Wno-error=pessimizing-move",
++                "-Wno-error=template-id-cdtor",
++                "-Wno-error=dangling-reference",
++                "-Wno-error=dangling-pointer=",
                  # Use GNU dialect, because GCC doesn't allow using
                  # ##__VA_ARGS__ when in standards-conforming mode.
                  "-std=gnu++17",

bazel/external/wasmedge.BUILD

@@ -21,4 +21,7 @@ cmake(
     generate_args = ["-GNinja"],
     lib_source = ":srcs",
     out_static_libs = ["libwasmedge.a"],
+    env = {
+        "CXXFLAGS": "-Wno-error=dangling-reference -Wno-error=maybe-uninitialized -Wno-error=array-bounds= -Wno-error=deprecated-declarations -std=c++20",
+    },
 )