skip `echo foo` on Solaris

On Solaris, it seems to access ENV in ``, so skip it now.

```
stderr output is not empty
   Exception `NameError' at bootstraptest.tmp.rb:7 - can not access non-sharable objects in constant Object::ENV by non-main Ractor.
   #<Thread:0x0044cdf0 run> terminated with exception (report_on_exception is true):
   bootstraptest.tmp.rb:7:in ``': can not access non-sharable objects in constant Object::ENV by non-main Ractor. (NameError)
   Exception `Ractor::RemoteError' at <internal:ractor>:130 - thrown by remote Ractor.
   <internal:ractor>:130:in `take': thrown by remote Ractor. (Ractor::RemoteError)
           from bootstraptest.tmp.rb:55:in `<main>'
   bootstraptest.tmp.rb:7:in ``': can not access non-sharable objects in constant Object::ENV by non-main Ractor. (NameError)
           from bootstraptest.tmp.rb:7:in `ractor_local_globals'
           from bootstraptest.tmp.rb:54:in `block in <main>'
```

0 files changed, 0 insertions, 0 deletions