Pend some tests because these are not working with macOS 15 and Xcode 16

spec/ruby/core/process/daemon_spec.rb

@@ -2,6 +2,9 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/common'
 
 platform_is_not :windows do
+  # macOS 15 is not working this examples
+  return if /darwin/ =~ RUBY_PLATFORM && /15/ =~ `sw_vers -productVersion`
+
   describe :process_daemon_keep_stdio_open_false, shared: true do
     it "redirects stdout to /dev/null" do
       @daemon.invoke("keep_stdio_open_false_stdout", @object).should == ""

test/ruby/test_process.rb

@@ -1838,6 +1838,8 @@ class TestProcess < Test::Unit::TestCase
     end
 
     def test_daemon_noclose
+      pend "macOS 15 beta is not working with this test" if /darwin/ =~ RUBY_PLATFORM && /15/ =~ `sw_vers -productVersion`
+
       data = IO.popen("-", "r+") do |f|
         break f.read if f
         Process.daemon(false, true)