Only CSR version 1 (encoded as 0) is allowed by PKIX standards

RFC 2986, section 4.1 only defines version 1 for CSRs. This version
is encoded as a 0. Starting with OpenSSL 3.3, setting the CSR version
to anything but 1 fails.

Do not attempt to generate a CSR with invalid version (which now fails)
and invalidate the CSR in test_sign_and_verify_rsa_sha1 by changing its
subject rather than using an invalid version.

This commit fixes the following error.

```
 2) Error: test_version(OpenSSL::TestX509Request): OpenSSL::X509::RequestError:
X509_REQ_set_version: passed invalid argument
/home/runner/work/openssl/openssl/test/openssl/test_x509req.rb:18:in `version='
/home/runner/work/openssl/openssl/test/openssl/test_x509req.rb:18:in `issue_csr'
/home/runner/work/openssl/openssl/test/openssl/test_x509req.rb:43:in
`test_version'
     40:     req = OpenSSL::X509::Request.new(req.to_der)
     41:     assert_equal(0, req.version)
     42:
  => 43:     req = issue_csr(1, @dn, @rsa1024, OpenSSL::Digest.new('SHA256'))
     44:     assert_equal(1, req.version)
     45:     req = OpenSSL::X509::Request.new(req.to_der)
     46:     assert_equal(1, req.version)
```

1 files changed, 1 insertions, 6 deletions

diff --git a/test/openssl/test_x509req.rb b/test/openssl/test_x509req.rb
index ff17c411..b98754b8 100644
--- a/test/openssl/test_x509req.rb
+++ b/test/openssl/test_x509req.rb
@@ -39,11 +39,6 @@ class OpenSSL::TestX509Request < OpenSSL::TestCase
     assert_equal(0, req.version)
     req = OpenSSL::X509::Request.new(req.to_der)
     assert_equal(0, req.version)
-
-    req = issue_csr(1, @dn, @rsa1024, OpenSSL::Digest.new('SHA256'))
-    assert_equal(1, req.version)
-    req = OpenSSL::X509::Request.new(req.to_der)
-    assert_equal(1, req.version)
   end
 
   def test_subject
@@ -106,7 +101,7 @@ class OpenSSL::TestX509Request < OpenSSL::TestCase
     assert_equal(false, req.verify(@rsa2048))
     assert_equal(false, request_error_returns_false { req.verify(@dsa256) })
     assert_equal(false, request_error_returns_false { req.verify(@dsa512) })
-    req.version = 1
+    req.subject = OpenSSL::X509::Name.parse("/C=JP/CN=FooBarFooBar")
     assert_equal(false, req.verify(@rsa1024))
   rescue OpenSSL::X509::RequestError # RHEL 9 disables SHA1
   end