Fix stub for openssl_csr_new

Author: bukka

ext/openssl/openssl.stub.php

@@ -433,9 +433,9 @@ function openssl_csr_export(OpenSSLCertificateSigningRequest|string $csr, &$outp
 function openssl_csr_sign(OpenSSLCertificateSigningRequest|string $csr, OpenSSLCertificate|string|null $ca_certificate, #[\SensitiveParameter] $private_key, int $days, ?array $options = null, int $serial = 0): OpenSSLCertificate|false {}
 
 /**
- * @param OpenSSLAsymmetricKey $private_key
+ * @param OpenSSLAsymmetricKey|null $private_key
  */
-function openssl_csr_new(array $distinguished_names, #[\SensitiveParameter] &$private_key, ?array $options = null, ?array $extra_attributes = null): OpenSSLCertificateSigningRequest|false {}
+function openssl_csr_new(array $distinguished_names, #[\SensitiveParameter] &$private_key, ?array $options = null, ?array $extra_attributes = null): OpenSSLCertificateSigningRequest|bool {}
 
 /**
  * @return array<string, string|array>|false