message: build: fix cares build
  broke CentOS/RHEL build, force lib install dir to lib rather than lib64 in those distro, so rules_foreign_cc can find built static libraries.
diff: @@ -82,6 +82,7 @@ envoy_cmake_external(
  "CARES_SHARED": "no",
  "CARES_STATIC": "on",
  "CMAKE_CXX_COMPILER_FORCED": "on",
  + "CMAKE_INSTALL_LIBDIR": "lib",
  },
  defines = ["CARES_STATICLIB"],
  lib_source = "@com_github_c_ares_c_ares//:all",
  