Update the latest version of EnvUtil

[hsbt]

Resolve #589

envutil.rb in this repository is pretty old. I update it with the latest version of ruby/ruby repository.

[eregon]

This new version seems to have the same problem as the old one did on TruffleRuby:
From https://github.com/ruby/openssl/actions/runs/3837266200/jobs/6532377487 but this happens even on CRuby 3.0:

===============================================================================
Error: test_openssl_engine_id_name_inspect(OpenSSL::TestEngine):
  Timeout::Error: execution of assert_separately expired timeout (10 sec)
  pid 6324 killed by SIGKILL (signal 9)
  | 
  | /home/runner/work/openssl/openssl/test/openssl/test_engine.rb:77: warning: Skipping set of ruby2_keywords flag for with_openssl (method accepts keywords or method does not accept argument splat)
-------------------------------------------------------------------------------
0 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
0% passed
-------------------------------------------------------------------------------
0.00 tests/s, 0.02 assertions/s
5 tests, 6 assertions, 0 failures, 5 errors, 0 pendings, 0 omissions, 0 notifications
Finished in 59.363426555 seconds.
-------------------------------------------------------------------------------
6 tests, 6 assertions, 0 failures, 6 errors, 0 pendings, 0 omissions, 0 notifications
-------------------------------------------------------------------------------
0 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
0% passed
-------------------------------------------------------------------------------
0.00 tests/s, 0.03 assertions/s

0% passed
-------------------------------------------------------------------------------
0.06 tests/s, 0.09 assertions/s
Finished in 51.416196363 seconds.

-------------------------------------------------------------------------------
0% passed
-------------------------------------------------------------------------------
0.07 tests/s, 0.09 assertions/s
Finished in 26.780028326 seconds.
-------------------------------------------------------------------------------
1 tests, 2 assertions, 0 failures, 1 errors, 0 pendings, 0 omissions, 0 notifications
0% passed
-------------------------------------------------------------------------------

[eregon]

https://github.com/ruby/openssl/pull/593/files#diff-e3677884066a26b36e5b40dec61618ca2e3de14232a1468e9989696b7ffdcbf3R251 does Test::Unit::Runner.class_variable_set(:@@stop_auto_run, true) if defined?(Test::Unit::Runner) which doesn't seem correct with recent test-unit.

[hsbt]

We can remove L251 and L263. But I'm not sure why tests failed with < Ruby 3.1.

[hsbt]

@eregon Thanks. I understood #589 and oracle/truffleruby#2800.

[eregon]

Looks good to me

[rhenium]

Looks good to me. Thank you!