test: fix test-dh-regr for OpenSSL 3

PR-URL: #34289
Reviewed-By: Richard Lau <[email protected]>

Author: Trott

Diff for: test/pummel/test-dh-regr.js

@@ -29,7 +29,7 @@ const crypto = require('crypto');
 
 // FIPS requires length >= 1024 but we use 256 in this test to keep it from
 // taking too long and timing out in CI.
-const length = common.hasFipsCrypto ? 1024 : 256;
+const length = (common.hasFipsCrypto || common.hasOpenSSL3) ? 1024 : 256;
 
 const p = crypto.createDiffieHellman(length).getPrime();