deps: V8: backport 895949419186

Original commit message:

    Add -Wno-string-concatenation to test/cctest:cctest_sources

    v8/test/cctest/interpreter/test-bytecode-generator.cc contains lots of string arrays with intentional concatenation.

    Bug: chromium:1114873
    Change-Id: Ie9d35c3849b5b0a6d1d01b6ce21fb80a320d8736
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2366829
    Commit-Queue: Arthur Eubanks <aeubanks@google.com>
    Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#69625}

Refs: v8/v8@8959494

common.gypi

@@ -34,7 +34,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.54',
+    'v8_embedder_string': '-node.55',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/test/cctest/BUILD.gn

@@ -63,6 +63,12 @@ v8_header_set("cctest_headers") {
   ]
 }
 
+config("cctest_sources_config") {
+  if (is_clang) {
+    cflags = [ "-Wno-string-concatenation" ]
+  }
+}
+
 v8_source_set("cctest_sources") {
   testonly = true
 
@@ -376,6 +382,7 @@ v8_source_set("cctest_sources") {
   configs = [
     "../..:external_config",
     "../..:internal_config_base",
+    ":cctest_sources_config",
   ]
 
   public_deps = [