Exclude MRI test TestRubyOptions#test_set_program_name

It fails because a spawned process fails with exception because of not implemented method Process.arg0. But the test may also pass because it may check a spawned process name before it stops with error. So some CI builds pass and some fails with error

```
1) Failure:
TestRubyOptions#test_set_program_name [/Users/graal1/slave/e/main/test/mri/tests/ruby/test_rubyoptions.rb:694]:
Expected /hello world/ to match "COMMAND\n" + "(ruby)\n".
```

Author: andrykonchin

test/mri/excludes/TestRubyOptions.rb

@@ -14,6 +14,7 @@
 exclude :test_separator, "pid 86222 exit 1"
 exclude :test_cwd_encoding, "pid 86223 exit 1"
 exclude :test_chdir, "pid 86224 exit 1"
+exclude :test_set_program_name, "Expected /hello world/ to match \"COMMAND\\n\" + \"(truffleruby)\\n\"."
 exclude :test_indentation_check, ""
 exclude :test_disable, "pid 86382 exit 0."
 exclude :test_flag_in_shebang, "pid 86383 exit 0."