chakra: revision bump to migrate to icu4c@76

Formula/c/chakra.rb

@@ -2,7 +2,7 @@ class Chakra < Formula
   desc "Core part of the JavaScript engine that powers Microsoft Edge"
   homepage "https://github.com/chakra-core/ChakraCore"
   license "MIT"
-  revision 8
+  revision 9
   head "https://github.com/chakra-core/ChakraCore.git", branch: "master"
 
   stable do
@@ -43,7 +43,7 @@ class Chakra < Formula
   end
 
   depends_on "cmake" => :build
-  depends_on "icu4c@75"
+  depends_on "icu4c@76"
 
   uses_from_macos "llvm" => :build
   uses_from_macos "python" => :build
@@ -56,6 +56,9 @@ def install
     # Use ld_classic to work around 'ld: Assertion failed: (0 && "lto symbol should not be in layout")'
     ENV.append "LDFLAGS", "-Wl,-ld_classic" if DevelopmentTools.clang_build_version >= 1500
 
+    # Workaround to build with ICU 76+
+    ENV.append_to_cflags "-DU_SHOW_CPLUSPLUS_HEADER_API=0"
+
     icu4c_dep = deps.find { |dep| dep.name.match?(/^icu4c(@\d+)?$/) }
     args = %W[
       --custom-icu=#{icu4c_dep.to_formula.opt_include}